Mercedes-Benz C-Class Estate (2015)

The optimised space concept also includes enhanced details which go largely unnoticed in the first instance, but which have a positive impact in everyday motoring. For instance, the vehicle including the exterior mirrors may well be twelve millimetres wider than its predecessor, yet thanks to a new folding system it is seven millimetres narrower with the exterior mirrors folded in - an advantage which comes into its own in practical situations such as manoeuvring in tight multi-storey car parks.

More load capacity, more variability

The moderate growth spurt also involves the load compartment. The sportier rear of the new C-Class Estate provides a maximum load capacity of 1510 litres (according to ISO 3832) and thus surpasses its predecessor by ten litres. The load compartment volume behind the rear seats has also increased by five litres to the current 490 litres.

Variability and consequently functionality also increased significantly. The rear seats now have a 40 : 20 : 40 split instead of the 60 : 40 split in the predecessor. This opens up a wide range of possibilities to use the interior according to individual wishes. For instance the C-Class Estate can be converted from a five-seater to a four, three or two-seater version by folding forward the split rear seat bench.

Practical details ensure that the large load compartment is even more versatile and easier to use, and as a result it can be conveniently tailored to the individual transport tasks. The electric unlocking of the rear seat backrests at the push of a button provides a flat, larger load compartment where necessary using the Singlefold function for the rear seat backrest. The switches for the electric backrest unlocking on the D-pillar are finished in silver shadow.

Four load-securing rings in the load compartment floor ensure the cargo is stowed securely. Side recesses between the wheel arch and tail lamp also provide stowage space. To protect the cargo an integrated combined luggage compartment cover and retaining net which is firmly attached to the bodyshell can be pulled upwards over the load and the safety net.

The loading convenience of the new C-Class Estate can optionally be further enhanced with the EASY-PACK tailgate and the likewise optional HANDS-FREE ACCESS system. It allows opening and closing the tailgate without touching it. All it takes is a motion of the foot in the area of the rear bumper.

Mercedes-Benz has also revised and optimised the stowage compartment concept. Compared with the predecessor the volume of the available stowage facilities has increased from 20.5 litres to 23.9 litres on vehicles with a manual transmission. Automatic models even offer a stowage capacity of 33.5 litres, which is thanks to a distinctive centre console.

Dynamic design with two different fronts

The new C-Class sets visual highlights with a striking, dynamic design that exudes sensual purity while arousing emotions at the same time. Customers can choose from two different fronts - sporty with a central star or - reserved solely for the EXCLUSIVE line - the classic Saloon grille with the Mercedes star on the bonnet, which puts particular emphasis on the status and reputation. The interior spaciously and stylishly showcases straightforward sportiness and aesthetic elegance with high-quality materials worthy of the luxury class with surprising new design ideas. In addition to the base model, there are also three distinct design and equipment lines each for the exterior and interior.

Lightweight construction par excellence

With regard to technical features the new Estate surpasses its successful predecessor in many areas and sets a multitude of new benchmarks in its segment besides. With an aluminium content of 49 percent and up to 65 kilograms less weight for the entire vehicle the Estate is the lightweight-construction leader in its segment. Other benchmarks: 112 grams CO2 emissions for the C 180 BlueTEC and the C 200 BlueTEC as well as 99 grams CO2 emissions for the C 300 BlueTEC HYBRID.

Agility with unrivalled comfort

The new C-Class Estate also boasts the best ride comfort - above all with the AIRMATIC air suspension which is offered for the first time in this segment -, outstanding NVH (Noise, Vibration, Harshness) values, the most comprehensive line-up of cutting-edge assistance systems as well as innovative technologies such as a multifunction touchpad, a head-up display and GPS-controlled climate comfort.

Estate customers will have a choice of two versions of the standard-specification steel suspension, which also includes a sporty set-up. As an alternative Mercedes-Benz for the first time offers an air suspension in this segment. The AIRMATIC air suspension manages to bridge the gap between a high level of ride comfort and dynamic, agile handling.

Efficient and lively engines

The powerful and efficient petrol and diesel engines with ECO start/stop function comply with Euro 6 emissions standards and ensure sporty performance and driving pleasure. Compared with the predecessor they consume up to 20 percent less fuel.

Three BlueDIRECT four-cylinder petrol engines and one BlueDIRECT six-cylinder petrol engine with power outputs ranging from 115 to 245 kW (156 to 333 hp) will initially be available for the new Estate. The four-cylinder C 350 HYBRID with plug-in technology and a power output of 155 + 60 kW (211 + 82 hp) will follow in due course.

The diesel models are powered by the further enhanced four-cylinder or a new small four-cylinder engine, which as BlueTEC models are all equipped with SCR (selective catalytic reduction) technology. They cover an output range from 85 kW (116 hp) to 150 kW (204 hp).

In addition, Mercedes-Benz offers a diesel engine combined with a hybrid module. The C 300 BlueTEC HYBRID with four-cylinder diesel engine and compact electric motor generates a power output of 150 + 20 kW (204 + 27 hp) and despite its high power output runs on just 3.8 litres of diesel per 100 km in NEDC combined mode (equivalent to 99 grams of CO2).

As is customary, the new C-Class Estate is also available with 4MATIC all-wheel drive.

Design: Space and form

The design of the new C-Class Estate consistently takes the design idiom forward. It is a luxury class estate coupled with emotion and high tech without neglecting functionality.

The design of an estate poses a stylistic challenge. Despite its large, functional spacious interior the versatile companion for professional use, sport, hobby, holiday trip and shopping spree should ideally cut a fine figure wherever it is and also provide the observer with an exhilarating visual experience. The new C-Class Estate meets these apparently contradictory requirements. It offers visibly high functionality and comes across as sporty, dynamic, innovative and attractive from any angle. Its pronounced aesthetic qualities perfectly embody a contemporary lifestyle with palpable passion.

Thus the new C-Class Estate visibly combines two opposites, which determine the design of the Mercedes-Benz brand: intelligence and emotion. On the one hand, consistently designed and deliberately positively taut surfaces with clear lines come across as highly sculpted and generate progressive light and shade effects. On the other, reduced forms emphasise the intelligent technology and the high level of functionality. These emotional, puristic highlights equate with the groundbreaking Mercedes-Benz design style and demonstrate sensual purity.

Two new fronts to choose from

As on the Saloon, the Estate's front differs depending on the exterior equipment line:

• The standard equipment, AVANTGARDE equipment line and the AMG Line feature the sports grille with two louvres, which in conjunction with the bumper tailored to these appointments and the long bonnet emphasises power and dynamism.
• The luxury grille, which is reserved solely for the EXCLUSIVE line, stands for status, refinement and contemporary luxury. Its slightly taller radiator grille is framed by a three-dimensional chrome surround with three horizontal louvres and one vertical louvre. The commanding Mercedes star on the bonnet underscores the effortless superiority.

Clearly drawn headlamp contours round off the strong character of the trademark front. The LED daytime running lamps integrated into the headlamp reflect the Mercedes-Benz contemporary lighting design, giving this element the effect of an iconic eyebrow that lends the new C-Class models an energetic, confident "gaze".

The new C-Class Estate, like its Saloon stablemate, comes with H7 halogen headlamps as standard. Two energy-saving LED headlamp variants are optionally available: a static and a dynamic version with LED Intelligent Light System and Adaptive Highbeam Assist Plus, which for the first time makes driving with permanent high-beam possible by masking other illuminated road users in the cone of light. A characteristic night design lends the vehicle its very own distinctive look in the dark, too.

Large air intakes in the front bumper underscore the sense of width and sportiness of the front end.

Sporty, powerful silhouette

A long roof line arches powerfully to the rear, terminating in a slim D-pillar which broadens upwards. The standard-fit roof rails are organically integrated into the design for the first time. The high, likewise taut beltline makes the side windows appear lower. Overall the vehicle's silhouette comes across as sporty and powerful, yet at the same time sensuous.

Viewed from the side, the dropping line highlights the vehicle's proportions as a hallmark Mercedes signature. In tandem with a counter-line rising in the lower part of the vehicle from the front wheel, it creates a formal sense of tension. The counter-line makes the vehicle appear longer, encompasses the rear and ultimately flows over the sides and into the bumper creating a sense of balance. The AVANTGARDE and EXCLUSIVE lines are upgraded with a trim strip galvanised in chrome above the door that tapers off towards the front.

As on the Saloon, the distance from the front wheel arch to the door opening, which is a measure of comfort, is unusually large for this segment in the case of the Estate.

Athletic, functional rear

The rear comes across as contemporary, clear and straightforward, adding a harmonious finishing touch to the rear of the vehicle. The narrowing of the C- and slim D-pillars creates a powerful, athletic shoulder. The functional tailgate visually emphasises the vehicle's width. A roof spoiler in the tailgate visually extends the roof, forming a spoiler lip that improves aerodynamics.

The tail lamps are two-piece for the first time in the new C-Class Estate and available with partial or full LED technology. The light intensity of the brake lamp varies between daytime and night-time within legally permissible limits.

Between the tail lamps a wide chrome trim strip continues the shoulders that flow into the rear, horizontally accentuating the Estate's powerful width.

Sporty looking three-dimensional exhaust tailpipes integrated into the bumper (dependent on equipment) provide the visual finishing touch for the vehicle. Together with the lower wing they form a single unit and thus create a special effect, making the rear end a true eye-catcher!

A large selection of light-alloy wheels with diameters between 40.6 cm (16 inches) and 48.3 cm (19 inches) underscores the stylish sportiness of the Estate.

Interior: Friendly, high-quality, sporty

Unusual for a vehicle with a focus on a high level of functionality is the high-quality interior of the Estate, which was adopted from the Saloon. With straightforward sportiness, thrilling flowing lines and high-grade materials, it realises a modern, luxurious and at the same time sporty ambience.

Mercedes-Benz not only raises the character and perceived value of the interior to an absolutely new level for this category with the new C-Class Estate. Here carefully chosen, high-class materials with a pleasant touch and feel dominate as well as precisely crafted details. This gives rise to an exceptional quality feel - surprising particularly for a vehicle where the emphasis has actually been squarely on everyday versatility. Thus the driver and passengers also in the new Estate, just like in the Saloon, enjoy unobtrusive, modern luxury whose clear-cut style fits in with contemporary tastes.

The basis is the new Mercedes-Benz design idiom, which combines sensuousness and clarity perfectly with dynamic sportiness and picks up on the key basic exterior traits on the new C-Class Estate inside the vehicle. This applies, for instance, to the scintillating play of contrasts between the clearly sculpted lines and surfaces which grow organically from them. The hallmark contemporary Mercedes-Benz design idiom of the dropping line sloping to the rear is, for instance, picked up in the doors. At the same time, the style-defining interior meets the most discerning design expectations which are today characterised by devices such as high-end smartphones and tablets.

A sweeping centre console cast from a single mould

The interior styling consciously demonstrates the courage to embrace the new in many respects and skilfully combines the architecture of the Mercedes-Benz sports cars with a newly interpreted, sporty and flowing centre console design. As a DIRECT SELECT lever handles gear selection on vehicles with automatic transmissions, the centre console in a large, one-piece dashboard console panel sweeps elegantly from the centre air outlets to the equally new touchpad in the handrest above the Controller on the centre tunnel. These seamless, clear-cut lines create a sense of open space and convey a sense of simple, purist modernity.

The large solitary component is available in numerous material finishes - such as with wood surfaces, bordered by a chrome surround, or with an exclusive piano-lacquer look - and characterises the interior's unique ambience with its avant-garde yet sensuous character. The three-dimensional shape of the genuine fine wood veneers in the centre console conveys modernity and craftsmanship. The cover of the stowage compartment, for example, is cut from the veneer of the centre console with virtually no material waste to ensure the individual wood grain continues in the cover without a visual break - the surface of the centre console consists in fact of a single piece of fine wood veneer.

On vehicles with manual transmission, the centre console is slightly steeper and features two separate trim elements in order to create ample space for ergonomic operation of the shift lever.

The progressively styled centre console provides an extremely fluid transition to the dashboard and beyond into the doors. As a result, visually soft volumes envelop the passengers and equally convey a sense of security and sportiness.

A wing-like trim element separates the upper and lower section of the sportily designed, broad dashboard. Its design makes it seem to be floating in the air. Skilfully staged ambience lighting further emphasises this floating effect. The visual separation makes it furthermore possible to choose different material and colour combinations for an individual feel-good atmosphere.

Commands with finger-tip control

The new touchpad developed by Mercedes-Benz with its 65 x 45 millimetre control surface made out of scratch-resistant material is built into the handrest on the central control panel in the centre console. While other solutions with a touch-sensitive surface only support selected operating steps, the driver and front passenger can use the touchpad in the new C-Class Estate to control all the functions in the central infotainment control panel using the kind of single and multi-touch finger gestures familiar from smartphones and tablet PCs. Slow and fast gestures are possible. The touchpad also permits letters, numbers and special characters to be entered using handwriting - in any language supported by Audio 20 or COMAND Online. The user receives clear tactile feedback when operating the touchpad control surface. Characters entered using the handwriting function can also be read aloud by the system, thus supporting blind operation. The acoustic output also ensures that drivers do not need to take their eyes off the road, keeping distraction to an absolute minimum.

Users can input commands with their hand sitting firmly on the ergonomic handrest without any need for hovering fingers. A new handrest detection feature also increases operating safety and helps prevent incorrect inputs. To this end the system analyses a sensor signal in three dimensions, thus detecting whether the hand is simply being placed on the handrest or is actually inputting data. The icons on the control surface are illuminated in the dark to help the user locate the various functions.

Three touch-sensitive buttons are arranged behind the touchpad which can be used to operate key functions quickly and directly (back function, switch to favourites menu, audio quick menu).

The touchpad in the Estate thus offers an additional, fully fledged and innovative input option to complement the existing Controller and the LINGUATRONIC voice-operated control system. Users can choose at any time which input method they prefer.

Elevated sportiness and high-value appeal

A centrally positioned free-standing central display is the main eye-catching feature above the centre console - with a screen diagonal of 17.78 centimetres (7 inches), or 21.33 centimetres (8.4 inches) if COMAND Online is specified. Both versions 'float' in the best ergonomic position above the centre console and are connected to it elegantly with a slim horizontal trim piece. Thanks to its ergonomic positioning, the eye easily adapts to the central display. Its surface is completely protected by a glass cover for the first time and is bordered by a galvanised silver shadow frame. Visualisations and animations on the central display enhance the emotive appeal and quality feel, augment operating convenience and bring the driver assistance and communications systems functions to life.

Head-up display: info in focus

Just like the Saloon, the new C-Class Estate can also be fitted with a head-up display. As in a jet fighter, it projects important information directly into the driver's field of vision, ensuring that there is less distraction from the road ahead. The information is displayed in the windscreen using mirror optics in full colour with a resolution of 480 x 240 pixels. The system provides a virtual image measuring approximately 21 x 7 centimetres and keeps the driver abreast of vehicle speed, posted speed limits, navigation instructions and DISTRONIC messages.

A light sensor automatically adjusts the brightness of the head-up display to the exterior lighting conditions. The driver can adjust the height of the virtual image based on their personal needs, enable or disable a range of display content and individually adjust the brightness of the display.

Sporty, stylish touches

Five round air outlets lend the instrument panel a sporty touch. Three-dimensional trim elements emphasise their high-value appeal - as does the carefully crafted topstitching, for example on the upper section of the instrument panel, the door centre panels and the upper body edge at window level. The door lining has also been redesigned and is characterised by high-grade materials as well as a striking surface grain and eye-catching curves.

The driver sits behind a wheel that comes in different designs depending on the selected equipment line. While each variant features a 3-spoke leather steering wheel with twelve function keys, their distinct colours and materials boost the character of the respective equipment lines. The steering wheel for the new AMG Line has a flat bottom. This provides the interior with wide-ranging differentiation options, running the whole gamut from "tangible contemporary luxury" to "sensual purity".

All switches feature a three-dimensional design. High-gloss black, genuine metal and galvanised surfaces, as well as effect paintwork matching the interior appointments colours form a key element of the high-value appeal. Surfaces with uniform styling and a minimal number of switches provide a serene atmosphere and enhance operating safety. Another example of the attention to detail is provided by the loudspeaker covers. Their delicate structures are elaborately photo etched and bordered by a surround made from genuine stainless steel if the Burmester® surround system is fitted.

Attractive and sporty seats with seat cushion length adjustment

Even the standard-fit sporty front seats underscore the Estate's sporty character. They offer more comfort in the shoulder area and their special shape is a factor in the greater legroom for the rear passengers. Their height adjustment range increased by ten millimetres compared with the preceding model series. The head restraints can be moved fore and aft and their height can be adjusted by about 55 millimetres via four detents.

"Cobra-look" front seats with an organic, sporty design and integral head restraint are available for the three lines: AVANTGARDE, EXCLUSIVE and AMG Line. For the first time the front seats can also be ordered with a seat cushion whose length can be adjusted by 60 millimetres, which offers even more options of finding the perfect seating position.

A large selection of seat covers with a variety of materials (e.g. fabric, fabric/ARTICO, ARTICO, leather) and refined colour combinations help C-Class customers to configure their vehicles to best suit their individual preferences.

High-strength steels and intelligent lightweight construction are the technical hallmarks of the sturdy rear seats. Their newly designed seat cushions furthermore enhance the comfort for the rear-seat passengers who also enjoy considerably more legroom and kneeroom.

The backrest of the rear seat can be folded with a 40/20/40 split. A folding armrest is integrated in the middle. Compared with the predecessor it offers more stowage space and larger cup holders. The three height-adjustable head restraints also provide improved rearward visibility.

The following optional extras are available for the seats independent of the selected line:

• Seat Comfort package with 4-way lumbar support, manual seat cushion length adjustment and electric seat cushion angle adjustment
• Fully power-adjustable 12-way seat adjustment with Memory package
• Three-stage seat heating with automatic intensity reduction/deactivation for seat cushion and backrest
• Climatised seats with seat ventilation and reversible airflow, as well as seat occupancy and automatic child seat recognition in the front passenger seat

The automatic child seat recognition system omits the previous transponder and uses a weight mat instead. This enables any child seat to be used. The airbag is automatically deactivated in this case and reactivated once the child seat has been removed.

Interior lighting with LED technology

The interior lighting primarily uses durable, energy-saving LED technology. This also applies to the optionally available ambience lighting in the three colours solar (amber), polar (ice blue) and neutral (white), which are selected via a menu item on the head unit and can be set to five brightness levels.

The allergy label confirms high air quality

It is not just the high-quality materials, harmonious shapes and functional equipment that characterise the atmosphere in the Estate interior. The interior is also allergy-friendly - as demonstrated by the European Centre for Allergy Research Foundation (ECARF) seal of quality, which was awarded to the new Mercedes-Benz C-Class Saloon and Estate. ECARF uses it to approve products whose suitability for allergy sufferers it has scientifically verified.

As part of their tests, the independent researchers took into account that the pollen count in spring is not the only problem to afflict motorists who suffer from allergies: emissions given off by the materials used in the interior or when contact surfaces are touched can also lead to a strong reaction, with symptoms such as swelling and inflammation of the nasal passage, hay fever or asthma.

Hence vehicles have to meet extensive requirements before the ECARF awards them the seal of quality for an allergy-friendly interior. To certify the vehicle experts test all equipment lines of a vehicle in numerous tests for inhaled allergens. They also conduct dermatological tests on all materials that might come in contact with the skin as well as testing the function of the pollen filter in both new and used condition. The air conditioning filters must also meet the strict criteria applicable to the ECARF seal of quality.

And then there are tests with human "guinea pigs". Driving tests, for example, were also conducted in the C-Class Estate with people suffering from severe asthma, with lung function tests providing information about the impact on the bronchial system.

Mercedes-Benz is the only vehicle manufacturer whose passenger cars bear the ECARF seal of quality. Apart from the C-Class Saloon and Estate, numerous other Mercedes-Benz model series from the A-Class to the S-Class meet the criteria for the allergy label. To ensure an allergy-friendly interior, Mercedes-Benz has been comprehensively testing for inhaled and contact allergens and has been testing the interior emissions of all its model series for 22 years now. A team of olfactory experts also works to ensure that odours in Mercedes-Benz vehicles remain at a consistently pleasant level.

Body: Intelligent lightweight construction

Thanks to innovative solutions, the bodyshell of the new C-Class Estate weighs less, provides the basis for outstanding vehicle handling and best noise and vibration comfort with exceptional rigidity, and offers a high level of crash safety.

Thanks to intelligent and innovative lightweight construction, the new C-Class Estate with its aluminium hybrid bodyshell as well as front wings, bonnet, tailgate, doors and roof panelling made of sheet aluminium weighs about 65 kilograms less than its comparable predecessor model. This makes it the "lightweight-construction leader" in its segment. Less weight pays dividends in multiple ways: fuel consumption drops by up to 20 percent with no loss of power and at the same time it makes a lower centre of gravity possible, which results in noticeably sporty, agile vehicle handling.

To achieve this, the Mercedes-Benz engineers used new lightweight-construction methods with the extensive use of aluminium, hot-formed steel components and ultra-high-strength steels - an unusual combination in volume-production vehicles. The proportion of these materials has therefore increased noticeably compared with the successful predecessor.

Apart from the weight, the Estate bodyshell sets new, challenging standards in many other respects - for instance with the high rigidity at the force transition points from the chassis to the body or with the NVH (Noise, Vibration, Harshness) characteristics. As a result, the ambitious goals regarding driving dynamics and noise level have even been exceeded.

To achieve this, the designers exploited, for instance, the greater design leeway offered by die-cast aluminium compared with steel. The body consists, among other things, of eight large die-cast components, which with conventional design would have to be made up of several steel parts. In this way a host of functions can be mapped in a single component and installation space put to optimum use. For instance, all shock absorbers at the front and rear of the vehicle are mounted on these kinds of complex, rigid aluminium die-cast components.

The tailgate on the Estate has an all-aluminium lightweight design. The die-cast inner component gives the tailgate outstanding strength and reduces the weight at the same time. The design options of die-cast components allow favourable use of the installation space as well as the integration of reinforcements. The sheet metal panelling is welded by lasers.

Safety takes precedence

In keeping with Mercedes-Benz traditions, the body is moreover designed for exemplary crash safety. The Estate not only meets all current national and international laws, but also all rating requirements as well as the more stringent internal Mercedes-Benz safety requirements, which are based on what actually happens in real-life accidents.

A high-strength safety passenger compartment forms the core of this concept. It consists primarily of high-strength and ultra-high-strength sheet steel and panels with graduated wall thicknesses designed to withstand specific local stresses. Many segments consist of hot-formed steels, which as the result of this production process become very hard and less deformable.

The high-strength safety cell is surrounded by specifically calculated deformation zones which have been extensively field-tested. Thanks to optimised dissipation paths and a combination of aluminium die-cast parts and ultra-high-strength materials, this set-up achieves outstanding crash test results (e.g. Euro NCAP) and guarantees maximum occupant safety.

Aerodynamics: Aerodynamically efficient

The new C-Class Estate also owes its high efficiency to its low Cd value - the lowest in its segment.

The new C-Class Estate also follows in the Mercedes-Benz tradition as the trendsetter in the aerodynamics discipline: the best variant achieves a drag coefficient of Cd = 0,27 and is thus the benchmark in this premium estate segment. However, the new Estate has larger exterior dimensions than its predecessor; its frontal area has been increased by 0.05 square metres to 2.23 square metres compared with the preceding series. This is, however, more than offset by the improved drag coefficient. The drag area (vehicle cross-section multiplied by Cd value) was reduced as a result by as much as five percent to 0.60 (predecessor 0.63).

Intensive detail work for Cd-benchmark

The aerodynamics engineers achieved the top Cd-an extensive bundle value with of measures. In concert with the designers, the intensive use of computer-based airflow simulations allowed them to find a basic aerodynamic shape already in the early design phase, which was the prerequisite for further optimisation in the wind tunnel. The optimum ratio between rear width and rear roof height had to be found when optimising the Estate. The wind resistance could only be reduced substantially compared with the predecessor thanks to the graduated sweeping momentum of the roof, combined with an extended roof spoiler and the associated side spoilers.

A host of other detailed optimisation measures provide the new Estate with the lowest Cd-value in its vehicle segment. For instance, the A-pillar was optimised in many details and ensures a flow around the vehicle with little turbulence. In concert with the aerodynamically and aeroacoustically optimised mirrors it contributes to a reduction in drag and wind noise. Specially shaped front and rear wheel spoilers optimise airflow around the wheels.

EXCLUSIVE line vehicles even make aerodynamic measures visible for everyone. Depending on the engine, they come as standard or as an option with the AIRPANEL. Its louvres open and shut the radiator trim depending on the cooling demand. On the C 180 BlueTEC and C 200 BlueTEC variants the flow of cooling air is controlled by the annular shutters behind the radiator. With savings of 2 to 3 grams of CO2 per kilometre both measures for controlling the cooling air are effective - and in the case of the AIRPANEL even visible - aerodynamics measures.

Wind noise minimised

Special attention during the aeroacoustic development was on further improving wind noises caused by the air flowing around the vehicle and its detachable body parts compared with the preceding model. In particular the impact of the air flowing over the side windows, i.e. the associated acoustic excitation, play an important role in near-field acoustics and have been decisively minimised. The low-frequency noise characteristics were also improved right from the simulation phase through a host of detail optimisations - such as on the main floor of the bodyshell and the new aluminium doors.

The fine-tuning of the door seals, whose concept was taken from the S-Class, was finally conducted on the actual vehicle in the wind tunnel in order to fully meet the aspirations of the C-Class as a premium estate. Windows with laminated safety glass are available as an option for the front doors, which can then reduce the wind noise penetrating the passenger compartment to virtually the same level as the E-Class.

Engine and drive system: Efficiency and driving pleasure

Powerful and efficient petrol and diesel engines provide for lively performance and superb driving pleasure. All meet the Euro 6 emissions standard, are equipped with ECO start/stop function and reduce fuel consumption and CO2 emissions by up to 20 percent compared with the outgoing model.

An innovation is a small diesel engine with a displacement of 1.6 litres (OM 626). Reduced weight, compact design and low specific fuel consumption are among its special merits. Depending on its configuration, the single-stage turbocharged four-cylinder engine generates 85 or 100 kW (116 or 136 hp) of power from a displacement of 1598 cc and delivers 280 or 300 Nm of rated torque. This engine puts the new C-Class Estate in a leading position within its segment in terms of CO2 emissions.

The OM 626 is the first standard passenger car diesel engine to use steel pistons. Thanks to reduced friction and better thermal behaviour they offer clear advantages in terms of fuel consumption and strength over aluminium pistons, which are state of the art today. The crankcase of the new diesel engine, which is characterised by particularly comfortable NVH properties, is made of grey cast iron, the cylinder head of an aluminium alloy. An overhead camshaft actuates two intake and two exhaust valves per cylinder.

The common-rail direct injection system of the new small diesel engine operates at a maximum injection pressure of 1600 bar. Solenoid injectors and injection nozzles with flow-optimised hole geometry ensure low emissions and quiet operation.

The new diesel engine is the product of the strategic cooperation with Renault. It is produced by Renault and assembled in part in Bremen. Technology modules specific to Mercedes-Benz make the engine more efficient. They include the ECO start/stop function, the ancillaries and a special dual-mass flywheel that better compensates the imbalances that are characteristic of diesel engines and makes a balancer shaft unnecessary. The engine control unit with additional functions ensures a driveability that can be rightfully expected from a Mercedes.

Environment-friendly and powerful - the BlueTEC diesel engines

In addition to the new small diesel engine, an advanced version of the 2.2-litre four-cylinder diesel engine is also available in several output variants. The diesel engines will thus cover an output range from 85 kW (116 hp) to 150 kW (204 hp).

All diesel engines are equipped with SCR (selective catalytic reduction) technology for particularly environment-friendly driving and ensure that the models with diesel engines attain at least efficiency class A, and in most cases even efficiency class A+. The models with 4MATIC all-wheel drive are the exceptions.

Hybrid with four-cylinder diesel engine

In addition, Mercedes-Benz offers a diesel engine combined with a hybrid module. The C 300 BlueTEC HYBRID with four-cylinder diesel engine and compact electric motor generates a power output of 150 + 20 kW (204 + 27 hp) and runs on only 3.8 litres of diesel per 100 km in NEDC combined mode.

In addition to the combustion engine and the electric motor the hybrid module of the C 300 BlueTEC HYBRID includes the 7G-TRONIC PLUS transmission, combined power electronics with DC/DC converter and a high-voltage lithium-ion battery. It has a high energy density and is consequently particularly suited as a storage medium for the electric energy generated by the electric motor. An additional conventional 12-volt battery is installed in the multifunction recess in the rear of the hybrid model. It powers all standard consumers and the high-voltage components.

The hybrid model is furthermore equipped with an electric vacuum pump and a braking system for effective energy recuperation custom-developed for the hybrid. An electric refrigerant compressor ensures the automatic climate control system also works when the combustion engine is switched off. This technology makes pre-entry climate control of the vehicle possible to ensure pleasant interior temperatures already when getting into the vehicle.

Thanks to the particularly compact components, the hybrid technology could be fitted in the standard installation spaces without restricting the load compartment volume.

Hybrid technology unlocks new possibilities

The hybrid model offers all traits of a modern hybrid vehicle. These include first and foremost:

• Silent start - the electric motor moves the vehicle quietly for the first few metres.
• Electric driving - a limited distance can be covered in all-electric mode at speeds up to about 35 km/h; this is useful for manoeuvring and in stop-and-go traffic, for example.
• Sailing in "C" (Comfort) mode - the vehicle coasts with the engine switched off. If the driver releases the accelerator at speeds below 140 km/h, the combustion engine is decoupled and switched off - the vehicle enters sailing mode. In the process the electric motor generates overrun torque through energy recuperation so that the vehicle coasts and decelerates like a conventional vehicle. The recuperated energy is stored in the high-voltage battery and is available for boosts and electric driving.
• Sailing in "E" (Eco) mode - energy recuperation is reduced to a minimum. While the combustion engine remains switched off, only a small amount of the energy is used through recuperation to cover the requirements of the on-board electrical network. Instead it provides a higher coasting speed and/or longer coasting distance - an advantage on longer downhill stretches and in approaching traffic lights and junctions with foresight.
• Sailing PLUS - this function is activated in sailing mode with the right-hand steering-wheel gearshift paddle. It reduces, as in the "E" mode, energy recuperation to a minimum.
• Boost effects - the electric motor boosts the combustion engine with its powerful torque. This enables faster overtaking and acceleration manoeuvres as well as more tangible agility and consequently more safety and driving pleasure.
• Recuperation - while on the move, as soon as the driver releases the accelerator, overrun recuperation begins. This converts the vehicle's kinetic energy into electrical energy and stores it in the high-voltage battery. Energy is also converted via the electric motor when decelerating using the service brake.

The electric motor provides yet another benefit: it dampens torsional vibrations in the powertrain and consequently increases ride comfort.

A further hybrid model, due to follow six months later, will be powered by a petrol engine and feature plug-in technology.

The petrol engines

Three BlueDIRECT four-cylinder petrol engines and a BlueDIRECT six-cylinder petrol engine developing 115 to 245 kW (156 to 333 hp) will also be available. The four-cylinder C 350 HYBRID with plug-in technology and a power output of 155 + 60 kW (211 + 82 hp) will follow in due course.

The BlueDIRECT petrol engines combine spontaneous response and exemplary power delivery with high efficiency and best-in-class emissions. The engineers have developed the technology further into third-generation direct petrol injection with spray-guided combustion. The system pressure is up to 200 bar, the pressure being variably optimised according to the engine's mapping. Piezo injectors enable optimal mixture formation with up to five injections per power stroke. The third-generation direct injection is supplemented by rapid multi-spark ignition (MSI). The result of this is excellent utilisation of the fuel with minimum emissions.

The thermal management is also efficient: when the engine is cold, no coolant runs through the engine thanks to an on-demand water pump. As a result, the combustion chambers heat up more quickly after starting up the engine. The thermostat is electronically controlled and the coolant temperatures are adjusted according to driving style and ambient conditions. In the interest of high efficiency, the volumetric flow of the oil pump is likewise controlled as in the V engines. All engine variants are designed for operation with E10 premium petrol and an octane rating of 95 RON.

Since the Estate engines are up to 20 percent more fuel-efficient than the outgoing model, the fuel tank has been reduced to 41.5 litres despite the comparable range (C 250 and C 250 BlueTEC 66 litres). A 66-litre tank is also optionally available for the other models.

ECO start/stop function with direct starting as standard

The ECO start/stop function included as standard in all models operates with starter motor-supported direct starting. This means that when the engine is switched off, the angle of the crankshaft is registered by a crankshaft sensor so that the engine control unit knows the positions of the individual cylinders. On restarting, it can then select the cylinder that is in the most suitable position for first ignition. After the starter has briefly turned over the engine, reliable injection, ignition and combustion is immediately possible in the ideally positioned cylinder.

Optimised powertrain for more comfort and efficiency

Mercedes-Benz offers a new 6-speed manual transmission for the four-cylinder engines in the new C-Class Estate. It stands apart first and foremost by virtue of its enhanced ease of shifting coupled with increased shifting precision and a harmonious gear change sequence. Dry sump lubrication and improved low-friction oil enable comfortable gearshifts even after a cold start.

Smooth automatic gearshifts are provided by the 7G-TRONIC PLUS automatic transmission with DIRECT SELECT lever and DIRECT SELECT gearshift paddles, which has undergone further development at Mercedes-Benz in the interests of enhanced environment-friendliness and driving pleasure.

Among the traits of the latest evolutionary stage of the 7G-TRONIC PLUS are the new torque converter with reduced slip, an ECO transmission mode with improved gear spread as well as an auxiliary oil pump that maintains the operating pressure when the engine is automatically switched off. Friction-optimised components in conjunction with low-friction oil make it possible to lower the operating pressure.

A new feature is Momentary M mode. The benefit of this is that if the driver has shifted up or down manually, the transmission independently switches back to fuel-efficient automatic shift mode after a set period of time. This period of time is extended under specific conditions (no accelerator pedal use, e.g. on downhill gradients, high lateral acceleration, e.g. when cornering, or if the speed falls below a minimum threshold when coming to a stop), preventing the return to automatic mode.

In Momentary M mode as well as in "fixed" M mode, the driver will receive gear change recommendations in the multifunction display of the instrument cluster, to enable an efficient driving style.

4MATIC all-wheel drive

Traction and driving stability can also be improved in the C-Class Estate with the 4MATIC permanent all-wheel drive system - particularly in difficult road conditions. As ever, the combination of the ESP® driving dynamics control system with the 4ETS electronic traction system makes regular differential locks superfluous. This saves weight and noticeably improves handling safety as well as ride comfort. The transfer case of the all-wheel drive system is integrated into the main transmission.

The all-wheel drive models impress with:

• Good traction characteristics, with a 45:55 power split between the front and rear axle
• Low fuel consumption due to the improved efficiency of the drivetrain
• Good noise and vibration characteristics
• Additional weight of just 70 kg, compared with additional weight of up to 120 kg for the competition
• Unchanged bodyshell as well as unrestricted interior and luggage compartment space due to the compact design

Chassis and suspension: Comfort meets dynamism

Exemplary suspension comfort and road roar and tyre vibration characteristics coupled with outstanding dynamic vehicle handling - these are the hallmarks of the newly designed suspension of the new C-Class Estate. It comes across as light-footed and agile, delivering a high level of driving pleasure coupled with superb ride comfort in its segment.

A newly designed 4-link front axle makes the new Estate more agile than ever before. The 4-link concept isolates the spring strut from the wheel location functions and ensures favourable axle kinematics. It allows for an improved camber change, for example, and, in turn, higher cornering forces, making the suspension respond more sensitively to steering movements and allowing a sporty, agile driving style. Furthermore, the components of the new front axle are made of aluminium, making them two kilograms lighter than a corresponding steel design. All of which provides a sensitive response. This reduction in weight also contributes to the high efficiency of the new Estate.

An optimised multi-link independent rear suspension with 5-links ensures unsurpassed wheel location qualities and supreme straight-line stability. The rear axle carrier and the spring control arms are made of forged aluminium. A large rear-axle bearing contributes to isolating vibrations and thus to the outstanding NVH characteristics and ride comfort of the Saloon.

Just like the Saloon, the new C-Class Estate comes with steel springs and a DIRECT CONTROL suspension as standard. It is available in three variants:

• As a comfort suspension with selective damping system which adjusts automatically to the condition of the road surface,
• As an AVANTGARDE suspension with selective damping system, which combines high levels of comfort with sporty looks and
• As a sports suspension, which is lowered by 15 millimetres and also features a selective damping system and sports tuning. In addition, the sports suspension is combined with a more direct steering ratio, 18-inch mixed tyres and sports brakes to achieve maximum sportiness.

First air suspension in this category

Alternatively, the new C-Class Estate, like its Saloon stablemate, can be fitted with an air suspension (AIRMATIC) at the front and rear axles. Thanks to electronically controlled, continuous variable damping at the front and rear, it offers outstanding road roar and tyre vibration characteristics even with the vehicle loaded.

AIRMATIC also features all-round self-levelling for optimum ride comfort even with the vehicle loaded. It controls the ride height automatically depending on the speed and reduces fuel consumption on the motorway by lowering the vehicle, for example. This also improves driving safety. Furthermore, the ground clearance can be increased at the push of a button using the ride-height adjustment switch on rough roads or poor access roads.

Since neither the air suspension struts at the front axle nor the free-standing air spring at the rear are responsible for wheel location and absorbing cornering forces, AIRMATIC offers outstandingly comfortable driving characteristics which are otherwise the reserve of the luxury segment. It smooths out expansion joints, asphalt patches and undulating asphalt caused by trucks braking at traffic lights.

Without impairing comfort, the adjustable damping can deliver a high level of driving dynamics. During evasive manoeuvres, the system adjusts, for instance, the damping forces to the vehicle's driving dynamics in fractions of a second.

Choose your own driving experience

In the new C-Class Estate the driver can determine the desired driving experience at the push of a button. Depending on the equipment level, the driver can choose from various preconfigured drive programmes and one the driver can design personally to a large extent. The choice of drive programme affects various components, for instance changing how the Estate reacts to certain driving situations. It influences the characteristics of the throttle response, the speed-sensitive power assist, the shift points of the automatic transmission and the suspension damping.

Depending on the installed equipment the following drive programmes are available:

• - Comfort
• - ECO
• - Sport
• - Sport +
• - Individual

The "Comfort" mode is the most balanced drive programme with corresponding suspension tuning and consumption-optimised powertrain set-up.

The "ECO" drive programme trims the vehicle for minimal fuel consumption. In this context small compromises with regard to comfort are accepted - for example, reducing the output of the seat heating and the heated rear window or the adaptation of the cooling performance of the air conditioning system. In addition, "ECO displays" can help the driver adopt a more economical driving style. Economical accelerator pedal characteristics also help the driver adopt a fuel-saving driving style. With some engines the vehicle is moreover capable of sailing when the driver releases the accelerator and lets the vehicle roll in overrun mode. In this event the combustion engine is decoupled from the powertrain and the associated friction losses. The vehicle uses its current kinetic energy for a certain distance and consequently glides on the road with almost no fuel consumption.

The "Sport" drive programme is characterised by agility and driving pleasure with a sporty suspension tuning and direct accelerator pedal characteristics. The suspension is crisp and firm but still offers good ride comfort.

In "Sport+" mode the powertrain consistently reacts directly to dynamic load changes with a spontaneous response. The optionally available AIRMATIC air suspension has even sportier tuning and turns the Estate into the "cornering champion". The ECO start/stop function is then deactivated.

The "Individual" drive programme provides the option of varying individual parameters for the suspension, steering and powertrain that go beyond the preconfigured programmes. They are complemented by additional adjustment options such as ECO start/stop, climate control and ECO Assist dependent on the vehicle.

On vehicles with manual transmission an automatic double-declutching function is active when one of the sporty drive programmes is selected. It determines the target engine speed after a gear change and sets the appropriate engine speed automatically. This results in sporty driving characteristics one can feel, accompanied by enhanced comfort.

Steering with a sporty character

All models of the C-Class family will feature an electromechanical Direct-Steer system as standard from now on. This combines speed-sensitive servo assistance from the speed-sensitive steering with a steering ratio that varies according to the given steering angle. The power assistance provided by the rack-and-pinion steering gear is controlled on demand, thereby contributing to efficiency.

STEER CONTROL provides steering clues in dangerous situations

The new C-Class Estate comes standard-equipped with the STEER CONTROL steering assistance function. It can help the driver to stabilise the vehicle in difficult handling situations. To this end, the electronics determine in which direction the driver has to steer to defuse a critical situation, and introduces a corresponding steering-wheel moment into the steering that the driver feels clearly. In this way STEER CONTROL provides the driver with noticeable prompts in which direction to steer in order to stabilise the vehicle.

Fade-resistant brakes for short stopping distances

The brakes of the new Estate meet high requirements with regard to stopping distance, response, fade resistance, directional stability and service life of the brake pads. Single-piston sliding callipers at the front and rear axle with brake discs whose size is dependent on the engine provide for rapid deceleration. This task is handled by brakes with four-piston sliding callipers at the front in the C 250, C 250 BlueTEC, C 300 and C 300 BlueTEC HYBRID. This also applies to vehicles of the AMG Line design and equipment line, whose brake callipers bear Mercedes-Benz lettering.

The brake system of the Estate comes as standard with ADAPTIVE BRAKE. It features the following:

• Hill-Start Assist which prevents the vehicle from rolling backwards on a hill and thus facilitates starting off
• A HOLD function (standard with automatic transmission, with manual transmission in conjunction with cruise control optional extra), which holds the vehicle stationary without having to depress the brake pedal
• A brake-drying function which regularly wipes the moisture from the brake discs to make full braking power instantly available
• The priming function lightly puts the brake pads into contact with the discs the instant the driver releases the accelerator quickly, and can consequently shorten the stopping distance during subsequent braking.

Electric parking brake with Comfort Go

For the first time the C-Class Estate is standard-equipped with an electric parking brake that offers convenience and weight benefits over a foot-operated parking brake. The electric parking brake is operated with a control element below the rotary light switch - pushing the control element sets the parking brake, pulling releases it. The driver can also use the automatic release function Comfort Go. It automatically releases the parking brake when the driver intends to start off.

Normally the parking brake engages completely and permanently at speeds below 4 km/h independent of the duration of the actuation. However, at higher speeds it can also be used for emergency braking. If it is activated at a speed of more than 4 km/h, the vehicle will decelerate with the service brakes of all four wheels including ABS and ESP® control interventions.

Brakes with character

Other brake functions:

• As a torque vectoring brake it provides for additional safety at the limit by purposefully vectoring the torque between the wheels of the driven axle by means of one-sided brake interventions.
• The adaptive brake lights can warn vehicles following behind of heavy braking and shorten their reaction time.

Mercedes-Benz Intelligent Drive: The intelligent car

Making top-class safety available to everyone is the declared aim of Mercedes-Benz. That is why the new C-Class Estate and Saloon offer many new assistance systems, and assistance systems with a host of enhanced functions. The new C-Class Estate comes standard-equipped with the further enhanced ATTENTION ASSIST drowsiness and inattentiveness detection system and COLLISION PREVENTION ASSIST PLUS, which helps prevent rear-end collisions. The assistance systems enhance both comfort and safety. Mercedes-Benz calls this Intelligent Drive.

Numerous assistance systems are installed as standard or available as optional equipment. A sensor system, which may support a very extensive range of functions depending on the customer requirements, provides the basis for these functions. The standard-specification model comes with a multi-mode radar (range up to 80 metres) in the front bumper that supports the functions of the COLLISION PREVENTION ASSIST PLUS. If the DISTRONIC PLUS is specified, this sensor is replaced by the long-range radar (up to 200 metres) behind the radiator grille. Depending on the equipment, these sensors can be supplemented with a mono camera behind the windscreen for functions such as Lane Keeping Assist, Traffic Sign Assist or Adaptive Highbeam Assist Plus, as well as near-range radar sensors (30 metres) at the side in the rear bumper for the Blind Spot Assist.

In the case of a fully equipped vehicle with the Driving Assistance package Plus the coordinated sensor system provides the vehicle with a 360-degree view. This includes in particular a stereo multi-purpose camera (SMPC) behind the windscreen in the area of the rear-view mirror and hence at the level of the driver's eyes. Two camera eyes provide it with a three-dimensional view of the area up to around 50 metres in front of the vehicle, and it is able to monitor the overall situation ahead for a range of up to 500 metres and thus determine the position and movement of objects, especially of vehicles and pedestrians. The sensor system then includes two short-range radar sensors in the front bumper and at the side of the rear bumper respectively (range up to 30 metres), a long-range radar (up to 200 metres) including mid-range scan (up to 60 metres) behind the radiator grille and a multi-mode radar (up to 80 metres) in the centre of the rear bumper.

The data from the camera and radar sensors is compiled in a control unit in order to provide relevant data for a host of assistance systems - a process dubbed "sensor fusion" by safety experts. Intelligent algorithms analyse this data in order to detect and pinpoint the position of vehicles ahead, crossing, approaching from the rear and even from the front, as well as of pedestrians, within a large field of vision. In addition, the camera can also detect road markings and a variety of traffic signs. The aim is all-round protection not just for occupants of the vehicle itself, but for other road users too.

The Estate is fitted as standard with ATTENTION ASSIST, which can warn the driver of inattentiveness and drowsiness. The COMAND system navigation function on motorways flags nearby break options as stopovers, providing the system has been specified in the vehicle. The ATTENTION ASSIST function offers an adjustable level of sensitivity and can inform drivers in a separate view in the instrument cluster about their level of drowsiness and how long they have been driving since their last break.

COLLISION PREVENTION ASSIST PLUS: Now brakes autonomously when there is a threat of a rear-end collision

Also part of the on-board standard equipment is COLLISION PREVENTION ASSIST PLUS with extended capabilities. The further enhanced system can provide even more effective aid in mitigating the severity of rear-end collisions or even in preventing them entirely.

To this end, the radar-based system constantly monitors the area of traffic in front of the vehicle, and can determine the distance and speed of the vehicles ahead. If it falls clearly below the safe following distance, the system issues a visual warning to the driver. If it detects a serious risk of collision, the driver receives an additional audible warning. At the same time, the system computes the brake pressure required to still prevent the collision in the ideal case at speeds from as low as 7 km/h. If the warned driver then depresses the brake pedal firmly, the system is capable of boosting insufficient braking commensurate to the situation. In so doing it makes the best possible use of the remaining distance in order to leave vehicles following behind space for braking manoeuvres.

If the driver fails to react, the new COLLISION PREVENTION ASSIST PLUS can go one step further and autonomously brake for slower or stopping vehicles. The system even brakes when stationary vehicles are detected up to a speed of 50 km/h, and can prevent rear-end collisions up to 40 km/h depending on the situation.

Further assistance systems are optionally available, which are also bundled in relevant packages:

• DISTRONIC PLUS - relieves the burden on the driver in keeping a safe following distance.
• DISTRONIC PLUS with Steering Assist and Stop&Go Pilot - relieves the burden on the driver in keeping a safe following distance, even in stop-and-go traffic. Steering Assist is new and helps the driver with lateral control of the vehicle, even in gentle bends, and offers a tailback vehicle following function.
• BAS PLUS with Cross-Traffic Assist - boosts driver braking depending on the situation, if necessary up to full brake application and can also react to crossing traffic and pedestrians.
• PRE-SAFE® Brake with pedestrian detection - provides autonomous braking in the absence of a driver reaction. In typical urban driving scenarios, it can now prevent collisions with pedestrians or stationary vehicles or reduce their severity.
• PRE-SAFE® PLUS - detects an impending rear impact, warns the traffic following behind by means of high-frequency flashing of the rear hazard warning lamps, locks the brakes if the vehicle is stationary to reduce forward jolt and thus reduces the strain placed on the occupants and the risk of secondary accidents. PRE-SAFE® is activated immediately prior to the impact.
• PRE-SAFE® triggers preventive occupant protection measures when an accident is imminent, first and foremost the reversible belt tensioners.
• Blind Spot Assist - provides a visual warning and if the indicator is activated an audible warning of vehicles in the blind spot. As Active Blind Spot Assist in the Driving Assistance package Plus can help prevent a potential side-on collision by applying the brakes on one side at the last moment.
• Lane Keeping Assist - warns of unintended lane departures with pulsed steering-wheel vibrations. As Active Lane Keeping Assist in the Driving Assistance package Plus can correct the vehicle's track with one-sided brake application in the presence of solid lane markings. It also intervenes with one-sided brake application in the presence of broken lane markings if the adjacent lane is occupied and there is hence the risk of a collision by, for example, oncoming traffic, fast overtaking or overtaken vehicles.
• Intelligent Light System - adapts to a wide variety of traffic situations and tailors the light characteristics optimally to the prevailing visibility. It features an integral "coming home" function.
• Adaptive Highbeam Assist Plus - enables the high-beam headlamps to be activated permanently without dazzling others by blocking out other vehicles in the light cone of the high-beam headlamps and by dimming its edges in the presence of highly reflective signs.
• Traffic Sign Assist - recognises no-overtaking zones and the end of these zones in addition to speed limits. Can warn visually and audibly of no-entry signs (wrong-way driving) if the appropriate signs are posted.
• Active Parking Assist with PARKTRONIC - makes automated parking with active steering and brake actuation possible in both parallel and end-on spaces. Can also help when leaving a parallel parking space if the vehicle was parked using the system.
• Crosswind Assist - can compensate for veering out of the lane by means of one-sided ESP® intervention.

Passive safety: One star is all you need

In terms of passive safety the new C-Class Estate sets new standards in its segment.

In the development of the new C-Class Saloon and Estate in-house test requirements and test criteria for crash testing were applied that go beyond legal and rating requirements. Knowledge gained by Mercedes-Benz Accident Research was furthermore taken as a basis. Mercedes-Benz not only looks to vehicle ratings such as Euro NCAP, but also takes into account what actually happens in accidents, resulting in "real-life safety".

Just like the Saloon, the new C-Class Estate also achieves very good results with legal and rating tests. The basis for this is the intelligently designed bodyshell with its particularly rigid passenger compartment. The front end structure, floorpan, side wall and rear end were designed for high structural safety with regard to geometry, joining techniques and material quality. Contributing factors include:

• A high-strength passenger compartment made of high-strength and ultra-high-strength steel and sheet metal with graduated wall thickness
• A bodyshell structure whose front and rear can absorb energy with purposeful deformations
• A large deformation zone of the front due to a subframe that absorbs additional energy in an accident
• Several parallel load paths for improved load distribution in partial frontal collision (offset crash)
• A steering column that can deform telescopically in a frontal collision
• An extruded aluminium profile cockpit cross-member between the A-pillars
• Doors with reinforcement profile made out of aluminium
• A main floor with massive tunnel reinforcement and now continuous floor side members

Airbags and head restraints for safety

Three-point seat belts with pyrotechnical belt tensioners and belt force limiters are installed for driver, front passenger and passengers on the outer rear seats. In the PRE-SAFE® phase belt tensioning is electronically controlled and reversible. The centre seat of the second row is equipped with a standard 3-point belt system. A rear seat-belt status display in the instrument cluster informs the driver whether the passengers in the back have fastened their seat belts.

ISOFIX child seat anchorage points on the outer rear seats ensure safe attachment of appropriate child seats with additional anchorage points at the top of the rear seat backrest.

In addition, a host of airbags provides occupant protection in an accident. For example:

• An optimised windowbag in the area of the roof between the A, B and C-pillars for the head area of driver, front passenger and passengers in the outer rear seats.
• Combined thorax/pelvis sidebags for driver and front passenger, which are able to provide additional protection in the event of a side impact. Optional sidebags for the outer rear seats.
• Kneebag for the driver to protect the knees and stabilise the upper body, which positively influences occupant movement in an accident.
• Adaptive airbags for driver and front passenger with two-stage staggered deployment, depending on the detected severity of the impact and seat position.

Intelligent front passenger airbag

The front passenger seat is fitted with automatic child seat recognition, which dispenses with the existing transponder and instead works with a weight mat. This enables any child seat to be used. The airbag is automatically deactivated in this case and reactivated once the child seat has been removed if somebody again occupies the front passenger seat. Unlike systems offered by competitors, which often use a key switch to deactivate the airbag, this system prevents the user from operating the airbag incorrectly. Users often forget to manually activate the front passenger airbag when removing the child seat. In the event of an accident this can place adult occupants in considerable danger since the front passenger airbag and the seat belts work in tandem and can only achieve the necessary protective effect for adults by operating together.

New head restraints for driver and front passenger provide early support for the head in the event of a rear impact and thus are able to reduce the risk of whiplash injuries.

Systematic pedestrian protection

The following measures are implemented for pedestrian protection:

• Active bonnet, which is moved upwards by approximately 80 mm when an impact is detected, thus creating additional deformation space during the impact. The bonnet can be locked again afterwards to drive to the nearest workshop, for example. After having been triggered, the pyrotechnical actuators must be replaced. The pyrotechnical actuators are lighter and more compact than reversible actuators.
• BAS PLUS with Cross-Traffic Assist and PRE-SAFE® Brake alert the driver, provide braking assistance and trigger, if necessary, autonomous braking when the system detects a pedestrian in the danger zone and the driver does not react to the system's warnings. This pedestrian detection, in conjunction with the optionally available Driving Assistance package Plus, represents a milestone in preventing accidents with pedestrians and/or reducing their consequences.

In the event of an accident

After an accident has occurred, various measures dependent on accident type and severity can mitigate the consequences and make fast rescue possible. These include:

• Automatic interruption of the fuel supply can prevent leaking fuel and fires.
• Engine emergency shut-off can prevent the risks of fire and prevent the vehicle from moving inadvertently.
• Deactivation of the 12V starter motor circuit minimises the risk of electrical shorts in the engine compartment in serious accidents and thus the risk of fire.
• Deactivation of the high-voltage system ensures the electrical safety of rescuers and vehicle occupants after an accident.
• Automatic door-lock release can help the occupants get out of the vehicle on their own or facilitate their rescue.
• The windows are partially opened automatically to ventilate the interior - for example, in the event of smoke build-up from the pyrotechnics of the airbags.
• The hazard warning lights are activated to warn other road users.
• Crash-responsive emergency lighting is activated, improves orientation in the vehicle, and can make it easier for the rescuers to locate the vehicle.
• Crash gaps integrated between the wings and the doors can make it easier to open the doors after a frontal collision.
• The electrically adjustable steering column automatically rises and can thus make rescuing the driver easier.

Mercedes-Benz emergency call for fastest possible aid

The new Mercedes connect me system is celebrating its premiere in the C-Class Estate. Supported functions include the Mercedes-Benz emergency call. The emergency call can be made automatically or manually. It is automatically triggered if at least one airbag in the vehicle deployed. The service centre then establishes voice communication with the vehicle. If there is no response, it immediately alerts the nearest rescue service.

Guidelines for Rescue Services with important information for rescuers

To enable rescuers to work quickly and safely, Mercedes-Benz provides a rescue card for the C-Class in various languages that can be downloaded for free. The C-Class is furthermore equipped with QR code stickers - a small but effective innovation with which Mercedes-Benz makes rescuing accident victims faster and safer. The QR code can be read with smartphones and tablet computers and sends a rescue card for the vehicle model to the display of the rescuers. This card contains all the information needed to rescue casualties quickly.

Climate control: Signals from space

The climate control system in the new C-Class Estate has been fine-tuned and substantially improved. This applies in particular to the precise regulation, performance and the air quality.

Three climate control systems are available for the new C-Class Estate:

• THERMATIC as a single-zone automatic climate control system is fitted as standard on the C 180 and C 180 BlueTEC models.
• THERMATIC as a two-zone automatic climate control system with separate controls for driver and front passenger is installed in all other models and also optionally available.
• The THERMOTRONIC three-zone automatic climate control is optionally available, the only real such system in this segment. In addition to separate controls for the driver and front passenger, it provides the option of setting the temperature and airflow in the rear compartment. THERMOTRONIC furthermore has a residual engine heat function, which thanks to an electric auxiliary water pump allows residual heat operation when the ignition is switched off. It also offers a choice of three ventilation modes: Medium, Focus, Diffuse. In addition the system is equipped with a pollutant sensor to automatically switch to air recirculation mode.

The performance, air quality and control precision were considerably improved over the preceding model series. The two-zone automatic climate control has separate settings for the left and right, and also for the rear if THERMOTRONIC is specified. However, instead of channelling the air to the rear via an air duct as is customary, it also has its own blower in the centre console. This lets rear-seat passengers dial in their own feel-good climate.

Three different ventilation modes are available with THERMOTRONIC to account for the subjective individual comfort of the vehicle occupants:

• "Medium Air flow" is the standard setting.
• "Diffuse Air flow" is designed for minimum air flow and not aimed directly at the occupants; the air primarily flows from the defrost vents and footwell vents into the passenger compartment.
• "Focused Air flow" operates with more air which primarily flows from the nozzles of the ventilation level.

The climate control system works even more efficiently

The climate control system of the new C-Class for the first time uses a new energy-efficient generation of blower motors. They weigh about 35 percent less than conventional blower motors and save a good 30 percent of energy, which in average customer operation translates into about 0.3 g of CO2/km. Their compact size also provides substantial benefits with regards to installation space. Energy-efficient control is also a factor in the efficiency of the climate control system.

Control via satellite navigation

The new C-Class is the only vehicle in the segment to offer tunnel detection via satellite navigation. On the basis of map information from the navigation system and the GPS location data, the system detects when the vehicle enters a tunnel. It then automatically closes the air recirculation flap in order to prevent the outside fume-filled air from entering the vehicle via the air vents. Once the vehicle has left the tunnel, the flap opens and fresh air can once again flow into the interior.

Individual fragrance, ionised air

Another highlight for creating the feel-good atmosphere is the AIR-BALANCE package with active fragrancing, ionisation and even more efficient filtration compared with the standard model.

The interior fragrances extend the sensuous perception of the Mercedes-Benz interior and help individualise the smell of the interior. Four different fragrances are available. The fragrancing changes the interior smell neither permanently, nor are the fragrance molecules deposited on the vehicle's fabric surfaces or on clothing. The impression left by the fragrance is subtle, comes across as unobtrusive and fades away quickly. The vehicle occupants can switch the active fragrancing on and off, and adjust its intensity to their own preferences.

Ionisation is another component of the AIR-BALANCE package, with which the air from the air conditioning is conducted into the interior via the ioniser. The ioniser generates oxygen ions by means of high voltage. The air ionised in this way can eliminate certain viruses, bacteria and spores. At the same time the air can be freshened by an increased concentration of negatively charged oxygen ions. Both help to increase the well-being of passengers.

Remote activation of heating and ventilation system: Climate has priority

Remote activation of the heating and ventilation systems is optionally available for the new C-Class Estate.

In conjunction with a 12V lithium-ion battery, remote activation of the heating and ventilation systems makes pre-entry climate control of the parked vehicle possible. It is activated with a dedicated button on the vehicle key.

The heating or ventilation systems are activated dependent on the exterior temperature and the target value set on the A/C control panel. In heating mode the seat heating, the rear defrost and the heated exterior mirrors are active for a maximum of ten minutes.

In summer ventilation using the interior blower improves entry comfort when getting into the vehicle. This function can be activated for up to 120 minutes; in conjunction with seat ventilation it improves entry comfort even further. The ventilation can also reduce heating up of the interior during a stopover, if it is activated upon leaving the vehicle.

One of the system's benefits is quiet and emission-free operation.

Remote activation is not possible with conventional lead batteries. They cannot take a high enough load and would furthermore require a very long driving time to recharge. A lithium-ion battery on the other hand only needs a few minutes. Lead batteries can also not tolerate frequent discharging and take a long time to warm up. This handicap is much less pronounced in lithium-ion batteries. That is why they are also very efficient in winter.

Pre-entry climate control of hybrid vehicles

Hybrid vehicles and plug-in hybrid vehicles of the new C-Class models are equipped with pre-entry climate control which efficiently increases interior thermal comfort already at departure. Similar to the remote activation of the heating and ventilation systems in conjunction with a conventional drive system, this function activates the seat heating as well as the rear defrost and mirror heating in winter. On the plug-in hybrid, the high-voltage PTC and the interior blower are activated for pre-entry climate control.

In summer the electric refrigerant compressor can actively cool the interior and considerably enhance entry comfort.

Different pre-entry climate control stages are used depending on the degree of hybridisation. In the mild hybrid, pre-entry climate control is activated with the key shortly before engine start. On a plug-in hybrid, the type of pre-entry climate control is dependent on whether the vehicle is currently being charged. If that is the case, pre-entry climate control can be activated for up to 50 minutes. A plug-in hybrid is also capable of powering the system from the battery and continue to operate the climate control system during a stopover.

Pre-entry climate control can be activated by various means - with the electronic key, via KEYLESS-GO or with COMAND Online.

Different pre-entry climate control stages are used depending on the degree of hybridisation. In the hybrid, pre-entry climate control is activated with the key shortly before engine start. In the case of a plug-in hybrid, the pre-entry climate control can be run while the charging cable is still connected or also from the high-voltage battery. This ensures the climate control function can still be used even if the journey is interrupted.

Telematics: A feast for the senses

Like the Saloon, the new C-Class Estate offers a completely new multimedia generation with intuitive operation, featuring animations and visual effects which present all the functions in a clear and highly attractive manner. The Estate is furthermore also equipped as standard with the unique Frontbass system.

The principle of the Frontbass system, which was honoured with the DAIMLER Research and Innovation Award, sounds simple: instead of installing bass loudspeakers as usual in the doors, one (two with Burmester® surround sound system) is installed in the footwell of the new C-Class in front of the driver and front passenger. This was not possible with earlier bodyshell structures. However, the intelligent C-Class bodyshell concept with a high aluminium content provides the necessary installation space in the front longitudinal and cross members. The loudspeaker(s) is/are installed on the left and right in the footwell in an opening in the bulkhead. The cavities behind the members serve as resonance chambers. Because these structures are inherently very rigid, the bass notes reproduced here are always very precise and have little distortion, even in the case of very high signal levels. To put it in other words: clear, crisp bass with high dynamic range comes as standard in the new Estate.

The position of these independent closed woofers in the footwell creates ideal acoustic conditions. The firewall, the vehicle floor and the underside of the dashboard form a sort of funnel that focuses and concentrates the sound - better performance is the result. Acoustic efficiency also improves significantly. The formula 'low energy, lots of volume' saves energy to boot. In this way, the Frontbass system also contributes towards a CO2 reduction.

Precise, brilliant sound

With the new Frontbass system Mercedes-Benz not only revolutionised bass reproduction in cars, but also created the prerequisites for an outstanding overall listening experience. As no woofers now need to be accommodated in the doors, the irritating vibrations that are typical of such configurations are eliminated. The mid-range speakers and tweeters move closer to the vehicle's beltline and thus almost to the passengers' ear level. As a result, they produce a precise, brilliant sound.

Without conventional woofers in the doors there is additional door stowage space. It also makes it easier for people to get into the vehicle.

Listening pleasure guaranteed

Three infotainment systems are available for the Estate:

• Audio 20 USB
• Audio 20 CD
• COMAND Online

All come with a flat screen positioned above the centre console:

• The 17.78 cm (7-inch) TFT colour display of the Audio 20 and the Audio 20 CD has a resolution of 800 x 480 pixels. The 7-inch display is bordered by a high-gloss black front frame.
• COMAND Online offers a larger 21.3 cm (8.4-inch) display with a resolution of 960 x 540 pixels and a special bonded glass cover such as is familiar from consumer devices like the iPhone® or iPad. Both displays use IPS technology (in-plane switching) and have LED backlighting. Consequently they achieve high brightness values of about 500 cd/m2 and contrasts of about 800:1 and higher. A light sensor adjusts the brightness to the ambient light. The driver also has the option of adjusting the brightness of the display manually to suit individual preferences.

Internet and diverse data sources already available in the basic version

All three variants of the infotainment system are capable of connecting to the internet with a Bluetooth®-enabled mobile phone with mobile telephony card and data option. This enables the internet to be surfed without restrictions when the vehicle is stationary. Mercedes-Benz Apps such as Weather, GoogleTM Local Search with StreetView and Panoramio, destination/route download and Facebook can be used while on the move in conjunction with COMAND Online.

Audio and video playback is possible from various sources with all three variants. For example, via Bluetooth®, from an Apple iPod® or iPhone®, from an SD card, USB stick or CD/DVD (with Audio 20 CD or higher and with COMAND Online). COMAND Online offers integral hotspot functionality to boot. It allows passengers on all seats to connect different WLAN-capable devices such as laptop or tablet computers to the internet.

Control via the new touchpad

Audio 20 is operated with the familiar Controller on the centre console. Audio 20 CD and COMAND Online can be operated in addition with finger gestures using the new touchpad. As a third operating option COMAND Online also offers the LINGUATRONIC voice-operated control system for audio, telephone, navigation and music search.

Audio 20 and Audio 20 CD

The new C-Class comes with the Audio 20 system as standard. Its comprehensive features include an RDS/triple tuner with traffic information decoder (TP/TA), two USB ports in the centre armrest for external audio and video devices working with MP3, WMA, AAC and WAV file formats.

The Audio 20 CD can be operated with the touchpad and is furthermore equipped with a CD drive (MP3/WMA/AAC/WAV-capable) and - in conjunction with the Garmin® MAP PILOT or the pre-installation for the Garmin® MAP PILOT navigation system - with an SD card slot. Digital radio for the DAB, DMB and DAB+ standards is optionally available.

COMAND Online

The top-of-the-line COMAND Online is additionally equipped with a Bluetooth® interface that supports the use of text message and email write and read functions as well as audio streaming for music playback. A CD/DVD drive, a slot for SDHC memory cards and 10 GB of storage (Media Register) for compressed audio and video files (mp3, wma, aac, mpeg, avi up to 720p) are likewise integrated. Cover Flow display, song tagging and the "play more like this" function are also included.

COMAND Online also offers the option of playing videos from DVDs and has a picture viewer for photos from SD cards or USB mass storage devices. Optionally Mercedes-Benz equips the COMAND Online system with a six-disc DVD changer and TV receiver for digital TV reception with support for multichannel sound, EPG (electronic programme guide) and video text.

Sound system - concert hall sound

Audiophiles can have their Estate delivered equipped with the high-end Burmester® surround sound system. It brings a concert hall atmosphere to the Estate. The Burmester® surround sound system drives 14 loudspeakers (standard specification 10) with a 9-channel DSP amplifier and a total system output of 640 watts (standard specification 100 watts). All loudspeakers are additionally optimised for performance with the premium sound system.

Modern-style navigation

The Audio 20 CD can optionally be supplemented with the user-friendly Garmin® MAP PILOT navigation system. Its merits include accurate map data and excellent route guidance. The navigation software and map data are stored on an SD card, which is simply inserted in the dedicated slot of the Audio 20 CD.

The large screen above the centre console displays the maps in high resolution and in colour with the Garmin® look and feel. Additional navigation instructions are displayed in the instrument cluster. 3D views with exact representation of streets and buildings and photo-realistic junction and lane assistants make orientation easier.

Intuitive operation is provided by the Controller or the touchpad. The character recognition feature of the touchpad allows text input. The navigation system can also be operated by voice control. Software and maps can be updated easily via the internet.

Hard-disc navigation and more with COMAND Online

COMAND Online with its own fast 3D hard-disc navigation, topographical map display, photo-realistic 3D buildings and 3D map rotations as well as display of NASA satellite images provides a decidedly sensuous experience. The system presents its contents interactively and its features include an animated compass, a "Drive Show" with information for passengers similar to the on-screen presentations on board airliners and Google Maps displayed on the head unit. The navigation system is now also able to provide more accurate real-time information about the situation on the roads when COMAND Online receives its traffic data via the internet by means of the Live Traffic Information service. Unlike the previous data sources TMC and TMCpro, whose data is received by radio, Live Traffic Information uses a fast internet connection and is therefore always up to date.

The scope of functions also includes lane recommendations, following predefined routes and the calculation of four alternative routes.

Telephony via Bluetooth® as standard

The standard-fit Audio 20 USB system as well as Audio 20 CD and COMAND Online all offer basic telephony as standard, which links up a mobile phone to the vehicle via a standardised Bluetooth® interface. The optional Convenience Telephony is available as pre-installation of a universal telephone interface which allows the mobile phone to be connected to a phone cradle in the centre console. A suitable phone cradle for various mobile phone models is obtainable from Mercedes-Benz Accessories.

Digital Owner's Manual with intuitive search function

Voluminous owner's manuals are required to cover the ever increasing scope of vehicle electronics in particular. To make these manuals easier to use, Mercedes-Benz equips the new C-Class Estate in conjunction with COMAND Online for the first time with a Digital Owner's Manual - complemented by a printed version for the most important problem solutions such as in the case of a breakdown.

The benefits of the Digital Owner's Manual: it uses the browser of COMAND Online and is thus always close at hand for the driver. A text search function or a virtual representation of the vehicle help find required information quickly and easily. Let's not forget: instead of 450 or more pages, now only about 100 printed pages have to be enclosed. This saves about half a kilogram in weight.