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The new A-Class – the sporty compact model from Mercedes-Benz: "All set for attack"

The heartbeat of a new generation: at the centre of Mercedes-Benz's presence at the Geneva Motor Show (8 to 18 March 2012) will be the world premiere of the new A-Class. The company is opening up a whole new chapter in the compact segment: markedly emotive in design, with powerful engines ranging from 80 kW (109 hp) to 155 kW (211 hp), and extremely efficient, with emissions from just 99 g/CO2/km. At the same time the new model underlines that for Mercedes-Benz safety is not a question of price - the standard specification includes, amongst other things, the radar-based COLLISION PREVENTION ASSIST system.


"A is for Attack: the A-Class is a clear statement of the new dynamism of the
Mercedes-Benz brand", explains Dr Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars. "It is completely new, down to the last detail. In automotive development, it's not often you get the chance to start with a clean sheet of paper. Our engineers and designers have made the very most of that opportunity."

Design and dynamism are obvious characteristics of the new A-Class even at first glance, simply in the way it sits up to 18 centimetres closer to the road than its predecessor. The radical new design idiom that was so enthusiastically received upon its first appearance with the "Concept A-CLASS" has been rigorously applied for the series-production model. With their fresh interpretation of the classic two-box design, the Mercedes designers have created an emotive exterior with a pronounced sporty flair. "Applying the new dynamic style of Mercedes-Benz to the compact class was a challenge that we thoroughly enjoyed", explains Gorden Wagener, Head of Design at Mercedes-Benz. "The almost sculptural lines of the A-Class are very typical for Mercedes. The feature lines, particularly along the sides of the car, then give the A-Class structure and tautness."

The objective when it came to the interior design was to complement the sporty look of the exterior. On top of this the car has a high-quality feel about it that is unique in this segment, achieved both through the design idiom as such and through the choice and combinations of the high-quality materials used. As seen in the Concept A-CLASS, there is an option allowing a smartphone to be fully integrated into the operating and display system. A special app makes it possible to use the full functionality of the iPhone®, and in due course also of other smartphones, in the car.

All trim surfaces feature an electroplated finish in "silver chrome", giving them a genuine metallic surface with "cool touch" effect. "This is just one example of the way in which the quality of the A-Class's interior is not defined by classic trim elements but by consistent design and by the specific materials used", explains Hartmut Sinkwitz, Head of Interior Design. "The motto we used when designing the interior was 'pure sportiness, newly interpreted'."

Particular visual highlights include, for example, the air vents, which stand out like "sparkling jewels" (Sinkwitz), so underlining the exceptional quality of the interior. The sporty character of the vehicle is further emphasised by the integral seats (optional extra) in the front. The rear seat is similarly sporty in appearance and can accommodate up to three passengers.

As well as the basic specification, which can be individualised with a wide range of options, there is a choice of design and equipment lines that have been put together with the requirements of customers in mind: "Urban", "Style" and "AMG Sport".

The world premiere of the new A-Class (length/width/height: 4292/1780/ 1433 millimetres) will take place at the Geneva Motor Show (8 to 18 March 2012). It will be making its way to European dealers in September 2012.

Sporty exclusivity: the A-Class Sport offers a fresh definition of dynamism

For the first time, the performance specialists from AMG were involved in the development of the compact class from a very early stage. The result is the most dynamic version of the new model series - the A-Class Sport 'engineered by AMG', in which the visual affinity to the Concept A-CLASS is at its most evident - particularly in terms of the new diamond grille. The A-Class Sport features exclusive 18-inch AMG light-alloy wheels in a 5-spoke design with 235/40 R18 tyres all round and painted high-gloss black with a high-sheen finish, together with red-painted brake callipers. These give an indication of the particularly dynamic driving qualities of the A 250 Sport and the A 220 CDI Sport, which are differentiated, amongst other factors, by a special AMG-developed front axle and a suspension that has been configured to match.

Hints of red on the AMG front and rear aprons also serve to emphasise the expressive positioning of the new model. The contrast between black trim and additional accents in red continues in the interior: the contrasting decorative topstitching on the steering wheel and seats is in this same bright shade, as are the seat belts. The ambient lighting of the instruments and the highlight rings of the air vents are similarly red.

Drive system: new petrol and diesel-powered engines

A broad range of both petrol and diesel engines has something to suit every performance requirement, whilst also demonstrating the current state of the art in terms of efficiency: for the first time, a Mercedes-Benz will produce emissions of just 99 g of CO2 per kilometre.

The bandwidth of the new generation of petrol engines with a displacement of 1.6 and 2.0 litres ranges from 90 kW (115 hp) in the A 180 and 115 kW (156 hp) in the A 200 through to 155 kW (211 hp) in the A 250. Common to all is the combination of direct injection and exhaust gas turbocharging, a more advanced combustion process and an extended stratification range for lean-burn operation that uses fast-acting injectors for the multiple injection of the fuel as well as on-demand multi-spark ignition. CAMTRONIC is an innovation that will be celebrating its world premiere in the 1.6-litre engine: adjusting the valve lift on the intake side restricts the amount of fresh mixture used in the partial load range, so reducing consumption.

The diesel engines also offer an impressively high level of efficiency and environmental compatibility, thanks to sophisticated injection technology and turbocharging. The A 180 CDI offers an output of 80 kW (109 hp) and a maximum torque of up to 250 Nm, while the A 200 CDI has a maximum output of 100 kW (136 hp) and torque that rises to 300 Nm. The A 220 CDI has a displacement of 2.2 litres, an output of 125 kW (170 hp) and torque of 350 Nm, delivering absolutely exceptional performance in the A-Class.

All engines in the new A-Class feature the ECO start/stop function as standard. The engines can be combined either with the new six-speed manual transmission or, as an option, with the 7G-DCT dual-clutch automatic transmission.

Further highlights: suspension, aerodynamics, safety

The dynamism promised by the design and drive system is realised by the suspension. A noticeably lower centre of gravity and a new 4-link rear axle provide the basis for this; and would also make the installation of 4MATIC all-wheel drive possible. Customers can choose between various suspension settings, among them the optional sports suspension with Direct-Steer system. The electromechanical steering in the A-Class has been completely redesigned, so that the electric motor for the power assistance now sits directly on the steering gear in the form of a compact and extremely precise Dual Pinion EPS.

Its exceptional aerodynamic performance, with a new record Cd value of 0.26, puts the A-Class at the top of its class. This is further helped by the standard roof spoiler, which hides all the unsightly aerials on the A-Class.

The A-Class is the only vehicle in its class to feature as standard a radar-based collision warning system with adaptive Brake Assist, which lowers the risk of rear-end collisions. The COLLISION PREVENTION ASSIST system gives a visual and acoustic warning to alert a possibly distracted driver to identified obstacles, and prepares Brake Assist for the most precise braking response possible. This is initiated as soon as the driver steps firmly on the brake pedal.

The PRE-SAFE® preventive occupant protection system is now available for the first time in the A-Class. This innovation, which was premiered in the S-Class in 2002, thus makes its very first appearance in the compact class. Core features of PRE-SAFE® are reversible belt tensioning, the closing of side windows and sliding sunroof in case of critical lateral dynamics and adjustment of the fully electric front passenger seat with memory function to an ideal position for maximum effectiveness of the restraint systems. PRE-SAFE® is always activated in response to critical longitudinal and lateral dynamics and may also be triggered upon intervention by certain assistance functions.

The democratisation of safety also encompasses an array of other assistance systems which have been adopted into the A-Class from the larger model series. These include:

- ATTENTION ASSIST (standard)
- Brake HOLD function (standard)
- Hill-Start Assist (standard)
- DISTRONIC PLUS
- Adaptive Highbeam Assist
- Blind Spot Assist and Lane Keeping Assist
- Speed Limit Assist (speed limit sign recognition)
- Active Parking Assist
- LINGUATRONIC
- Reversing camera


The Mercedes management team on the A-Class
"All set for attack"

"A is for Attack: the A-Class is a clear statement of the new dynamism of the
Mercedes-Benz brand. The A-Class is completely new, down to the last detail. In automotive development, it's not often you get the chance to start with a clean sheet of paper. Our engineers and designers have made the very most of that opportunity."

Dr Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars

"A new Mercedes must take the lead, in technical terms, in every class of vehicle. Whether we're talking about efficiency, driving dynamics or safety: the new A-Class raises the benchmark significantly. Pure driving enjoyment, plus exemplary efficiency – from a technical perspective that is the quintessence of the A-Class."
Dr Thomas Weber, Member of the Board of Management of Daimler AG, responsible for Group Research and Mercedes-Benz Cars Development

"With the new A-Class, the company is opening up a whole new chapter in the compact segment. The A-Class is the sporty Mercedes among the compact models. It's the right product at the right time - and has tremendous potential to tap into new target groups and markets."
Dr Joachim Schmidt, Executive Vice President Mercedes-Benz Cars, Sales and Marketing

"No other car in this segment is as progressive as the A-Class. The almost sculptural lines of the A-Class are very typical for Mercedes. The feature lines, particularly along the sides of the car, give the A-Class structure and tautness. This new dynamic style is also immediately apparent in the interior."
Professor Dr h.c. Gorden Wagener, Head of Design, Mercedes-Benz Cars

"AMG was involved in the development of the A-Class right from the start. That is something very new in the compact segment. You can see evidence of this in the
A-Class sports models, which bear the quality seal 'engineered by AMG'. And they live up to that promise, not only with their exceptional looks, but with their equally exceptional driving dynamics."

Ola Källenius, Chairman of Mercedes-AMG GmbH

The design
The most progressive design in the compact class

The appearance of the new A-Class reflects the new Mercedes-Benz design strategy. The result is what is known as a two-box design with a distinct character of its own, a sportily emotive exterior and an exceptionally high-quality feel to the interior.

Defined edges and tautly drawn surfaces mark out the exterior design of the new
A-Class. The constant interplay between concave and convex planes creates a characteristic play of light, particularly along the sides of the car, which contributes to its unique appearance.

Typical features of the long, sporty front are its pronounced V-shape, the separate headlamps, the radiator grille with central Mercedes star and double slats to either side of the star, as well as the additional air intakes on the sides. The "dropping line" apparent in the side profile dissipates towards the vehicle's front end. The design of the headlamps, together with the configuration of the light functions within them, is a key element of the design concept.
The light modules and LEDs behind the headlamp cover glass have been arranged in such a way as to create the characteristic "flare effect" for the daytime running lamps and indicators. The so-called "flare" is made up of the feature line within the headlamp, the LED modules for the daytime running lamps and the bulb sets for the indicators. This signature effect gives the car its energetic look and so helps to define a new, youthful face for Mercedes.

The perfect interplay of dynamic design and excellent aerodynamics is nowhere more apparent than in the roof, with its smooth surfaces and taut, arcing curve. The silhouette reveals smooth, flowing lines finishing in a flat edge. The roof spoiler, which conveniently hides all the aerials, provides an extra sporty touch and gives structure to the roof assembly. The beltline rises to the rear to form a pronounced wedge-shape. The side view is distinguished by sensuously moulded sculptural side panels and distinctive lines. The front structural edge, above the wing, falls in what is known as a "dropping line" in a gentle arc towards the rear. The powerfully shaped shoulder muscles above the rear axle serve to emphasise the car's coupé-like character. A further line sweeps up from just in front of the rear wheel arch, and then gently fades away. All these lines give depth and dynamism to the car's profile. Dynamic side sill panels provide a final finishing touch towards the bottom of the car, enhancing the appearance of elegant light-footedness.

The broad emphasis of the tail end is revealed in an interplay of convex-concave surfaces and edges. The tail lights continue the line of the muscular shoulders back towards the rear, while their horizontal orientation emphasises the car's powerful breadth. The light functions are provided by fibre-optic cables and LED modules. Here, too, the interaction between design and aerodynamics is very clear: the surface finish of the tail lights is not only an interesting design feature, but also improves the airflow around the vehicle thanks to defined airflow break-away edges in the rear section.

The interior: excellent high-quality feel and consistent application of design

The high-quality feel and sportiness of the car are continued in the interior. Both objectives have been achieved with the help of a specific design idiom and through the various combination options possible with the high-quality materials selected. All trim elements have been given an electroplated finish, resulting in real metal surfaces with "cool touch" effect. The work has been executed with considerable care and attention to detail, so that they appear to have been moulded in one piece.

The instrument panel is clearly divided into a wing profile-type upper section and an aesthetically influenced lower section. The resulting effect is that the upper section appears to be supported by a 'muscle'. The manufacturing process used for this 'muscle' allows the creation of varying surface structures with soft tactile qualities. By using special films with three-dimensional structures it is possible to create a range of different surface finishes that permit an attractive play of light. The instrument panel incorporates five round vents, the outer rings of which have a high-quality electroplated finish. The airflow direction is governed by an insert that is reminiscent of an aircraft turbine and reveals a meticulous attention to detail. This too has an electroplated finish in "silver chrome". The free-standing display screen features a black piano-lacquer-look front panel and a flush-fitting silver frame.

The instrument cluster comprises two large round instruments, each of them with a small round instrument set within it. When at rest, the dial needles stand at 6 o'clock. The pointer inlays are generally white, although with the sportier design and equipment lines such as Urban and AMG Sport they are in red. The dials on the sporty equipment lines and packages are coloured silver with a chequered flag effect. The 3-spoke steering wheel comes with 12 function buttons and an electroplated bezel.

The centre dome and console, as well as the positioning of the various elements such as the head unit, lower control panel, air conditioning operating unit, stowage compartments, rotary push-button and armrest, reflect the findings of the ergonomics experts at Mercedes-Benz.

An extensive range of seat coverings, in terms of material (e.g. leather, fabric, Artico/fabric), colour combination and also geometry, provides scope for a broad range of individualisation options. Sports seats with integrated head restraints are available, for example, as an optional extra with all design and equipment lines. The sporty nature of the seats is emphasised by the opening between the upper edge of the seat backrest and the head restraint. On the back of the front seats this opening is edged with a frame in "silver chrome" and, in conjunction with the Light and Sight package, can also feature ambient lighting.

As well as the basic specification, which can be individualised with a wide range of options, there is a choice of design and equipment lines that have been put together with the requirements of customers in mind: "Urban", "Style" and "AMG Sport".































Credits: Daimler AG

Copyright © 2012, Mercedes-Benz-Blog. All rights reserved.

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The Mercedes-Benz 4MATIC Coupés: Refined Road Holding in All Conditions

Mercedes-Benz 4MATIC has been the leading technology in all-wheel drive for decades. Mercedes-Benz drivers the world over value its sure-footed agility on all manner of terrain and in no less than 21 4MATIC vehicles across ten different model ranges in the U.S. (almost 50 vehicles worldwide). While the 4MATIC name immediately points to Mercedes-Benz icons such as the G-Class and SUV pioneers like the M-Class, it also has a side of great elegance and athleticism. Look no further than the gorgeous and potent CLS550 4MATIC or the sporty and graceful C350 Coupe 4MATIC and E350 Coupe 4MATIC. At the top end of the range, there is now also supreme road holding combined with outstanding fuel economy in the S350 BlueTEC 4MATIC.


Roads can be dry or wet, covered in snow, mud or even black ice. You can face side winds, hydroplaning, not to mention treacherous hills, dirt tracks or steep mountain passes fraught with tight serpentines, pot holes and uneven surfaces. As it turns out, there is a drive system that takes all of this in its stride - 4MATIC all-wheel drive from Mercedes-Benz. The electronically-controlled system displays an impressive level of traction on all manner of terrain, raises active safety and offers an outstanding degree of driveline refinement.

Mercedes-Benz all-wheel drive technology has been tackling adverse road conditions throughout the world for more than 100 years, with the fourth generation of 4MATIC technology leading the way since it was launched in 1985. One million vehicles equipped with 4MATIC have been sold to-date in the U.S. (two million worldwide), making it one of the world's most trusted all-wheel drive systems.

More than half of that total volume is attributable to Mercedes-Benz customers in the U.S., who have opted for 4MATIC technology in vehicles spanning the full breadth of the model lineup, ranging from sedans and stations wagons, through the entire range of class-leading SUVs to the stunning CL550 4MATIC. And now, the 2012MY lineup includes no less than four beautiful and exciting additions to the 4MATIC range - the S350 BlueTEC 4MATIC, CLS550 4MATIC, E350 Coupe 4MATIC , and the C350 Coupe 4MATIC.

The CLS550 4MATIC and S350 BlueTEC are already on sale at authorized Mercedes-Benz dealers, and the others will be available to customers in April. Prices start at $44,370 for the C350 Coupe 4MATIC, at $53,675 for the E350 Coupe 4MATIC, at $74,675 for the CLS550 4MATIC and at $93,425 for the S350 BlueTEC.

Three new all-wheel drive coupes

Since Mercedes-Benz brought its first 4MATIC model to the U.S. in 1989, American drivers have been increasingly drawn to the handling and safety benefits of all-wheel drive. Entry into the world of Mercedes-Benz all-wheel drive coupes now begins with the C350 Coupe 4MATIC. This best-selling premium mid-size coupe comes with a host of outstanding features, including best-in-class safety and comfort equipment levels with up to nine airbags, active head restraints, automatic climate control and alloy rims, as well as the seven-speed automatic transmission. State-of-the-art driver assistance systems include Attention Assist, a HOLD feature for the Adaptive Brake system. Optional equipment includes Blind Spot Assist, Lane Keeping Assist and Parktronic with parking guidance system.

Like its rear-wheel drive sibling, the C350 Coupe 4MATIC is powered by a 3.5 liter V6 generating 302 hp and 273 lb-ft of torque. Fuel economy is uncompromised by the addition of 4MATIC and remains at an impressive 19 mpg city, 28 mpg highway and 22 mpg combined.

Moving into the full-size segment, the E350 4MATIC Sedan and Wagon are now joined by the E350 Coupe 4MATIC, bringing an additional injection of refined sporting character to one of Mercedes-Benz's biggest selling models in the U.S. Like the C350 Coupe 4MATIC, the E350 Coupe 4MATIC is powered by the 3.5-liter V6 engine and offers exactly the same fuel consumption as the E350 Coupe at 19 mpg city, 28 mpg highway and 22 mpg combined.

Also brimming with the latest driver assistance systems such as Attention Assist, the E350 Coupe 4MATIC adds Agility Control suspension to its standard equipment list, alongside PRE-SAFE®. Matched with 4MATIC all-wheel drive, this exceptional technology package delivers supreme handling and leading-edge safety even in the most extreme conditions

The third and final addition to the range of 4MATIC coupes is the stunning and superbly athletic CLS550 4MATIC. With 402 hp pumping from its 4.6-liter V8 engine and 443 lb-ft of torque, the formidably dynamic character of this ground-breaking four-door coupe is now even more impressive.

On the U.S. market since summer 2011, the new 4MATIC CLS variant is complemented by an extensive array of standard equipment and driver assistance systems, including PRE-SAFE, ABS anti-lock brakes with Brake Assist, ATTENTION ASSIST, traction control and the ESP electronic stability control.

In the S-Class range, Mercedes-Benz offers U.S. customers the perfect combination of luxury refinement, astonishing fuel economy and, now, even more tenacious road holding. Last summer, Mercedes-Benz brought its first diesel-powered S-Class to the U.S. since the 1996 model year. Powered by a 3.0-liter V6 clean diesel with 240 hp and an astonishing 455 lb-ft of torque, it has an estimated fuel economy of 20 mpg city / 31 mpg highway.

4MATIC - gripping driveline technology

The 1985 Frankfurt Auto Show - on the Mercedes-Benz stand a new driveline concept kicks up a bit of a stir. Dubbed 4MATIC, the technology - comprising automatic differential lock, traction control and all-wheel drive - is controlled electro-hydraulically and promptly turns all other 4x4 concepts firmly on their heads. The state-of-the-art concept went on to make its market debut in 1987 in the great granddaddy of the current E-Class.

Mercedes-Benz optimizes its 4MATIC permanent all-wheel drive, now in its fourth generation, in accordance with application. In its purely road-going vehicles, the C, E, S and CL and CLS-Class, the version used is set up for best possible performance. The system's compact design delivers a weight benefit of between 99 and 154 pounds, allowing for little to no fuel economy change and the passenger space remains unchanged from that of a rear-wheel drive version. In the GLK compact SUV, the system is also equipped with additional electronics for off-road driving. The M and GL-Class offer a 4MATIC that not only delivers safe and refined on-road performance, but also incorporates first-class off-road technology. The base version of this 4MATIC also provides the R-Class with excellent drive. In the big daddy of off-road vehicles, the G-Class, the permanent all-wheel drive is also set up to master the toughest off-road terrain. As you might expect, every single 4MATIC variant boasts extremely refined road manners and excellent handling, while providing a significant boost to active safety. Add to that good fuel economy, which comes about as the result of low weight and friction-optimized design.

In the C, E, S, CL, CLS and GLK Class, 4MATIC offers the ideal pre-conditions for delivering power to the road. The system's mechanical core splits the drive at a ratio of 45 to 55 percent between the front and rear axles and has a multi-plate lock in the central diff with a base locking force of 37 lb-ft . This fundamental concept enables a high degree of traction, with the rearward transfer of dynamic axle load under acceleration used to deliver more driving force to the road. The multi-plate diff lock can also vary the front to rear load distribution up to 30:70 in either direction when faced with the challenges presented by a slippery road surface. This means that intervention of the ESP®, 4ETS and ASR electronic control systems comes at the last possible moment, enabling the maximum amount of engine power to be converted to forward drive.

The M-Class and GL-Class are the vehicles that define the premium SUV segment and 4MATIC is the system that defines their superb handling both on and off the road. In both models, drive is split 50:50 between the front and rear axles. Sturdy prop shafts transfer power to the front and rear axle gear sets, while a bevel gear differential absorbs the rotational speed difference between the axles. ESP® and 4ETS also play their part in maintaining outstanding stability. 4ETS controls the distribution of driving force via brief braking inputs, using information from the ABS wheel sensors. If these rev sensors indicate that one or more wheels are losing grip, their brakes are applied automatically. The driving force to the wheels with good traction is consequently increased in proportion with the braking force applied to the slipping wheels, thus maintaining forward drive on loose or slippery surfaces.

For the toughest conditions

Ongoing model revisions have kept G-Class technology up to the minute for more than 30 years and, to this day, guarantee an outstanding drive system. Back in 1979, when it made its debut, the original G-Class was equipped with a selectable all-wheel drive system that operated with absolutely no electronic intervention, as per the technology of the day. The first major model revision came in 1990, bringing with it permanent 4x4. Since 2001, the G-Class has been equipped with additional electronic control systems. The combination of permanent all-wheel drive with the 4ETS traction system, ESP®, three locking differentials and low-range gearing gives the Mercedes-Benz G-Class a unique synthesis of high-performance dynamics and all-wheel drive systems that is absolutely unique in the world.

Tested to the limits

The set up of dynamic systems like 4MATIC all-wheel drive is one of the biggest challenges in a vehicle's development phase. Active safety, comfort and drivability under all possible (and impossible) conditions depend heavily on this development work. This is why test engineers select the world's toughest environments in order to push new models in the prototype phase to the very limits of their physical capabilities. It is the only way to ensure that the production versions function reliably over a lengthy lifecycle - regardless of operating and environmental conditions.

As a result, they undergo test driving under extreme desert conditions in the searing heat of the Namibian Desert, as well as calibration and test drives in the mind-numbing sub-zero temperatures north of the Arctic Circle. An ongoing comparison between "fire & ice" ensures that the information gathered in each environment can't have a negative impact on the other. Optimization is carried out in a similar manner in other areas of conflict with tools such as the "climb & speed" development program for off-road vehicles. In suspension testing on a race track, a new SUV might prove itself to be stable and safe at high speeds. But does it also display Mercedes refinement on the ride and comfort test circuit? Is the set up right for clambering around off-road? During the test phase, development engineers put several million kilometers onto a new model at locations all over the world. These practical tests are complemented by extensive calibration programs using a wide variety of test beds and detailed simulation programs. In the early stages of development, prior to practical testing, experts test up to 1,000 different vehicle variants using virtual techniques covering around 220,000 digital driving maneuvers.

More than a century of 4x4 development

The leading expertise of Mercedes engineers in the development of pioneering all-wheel drive concepts did not come about by accident. Mercedes-Benz 4x4 history starts as far back as 1903, since when the guiding principle has been - if you want to make better and safer headway under tough conditions, all-wheel drive is the best technology.

The all-wheel drive breakthrough came in 1907. Engineer Paul Daimler, the son of Gottlieb Daimler, had been working on this drive technology since 1903. It was for this reason that he was selected to lead the team that built the first all-wheel drive passenger car with an internal combustion engine, commissioned by the German Colonial Office. It was a real monster that took shape in the Daimler workshop in Berlin-Marienfelde. The all-wheel drive automobile was based on a commercial vehicle chassis, had a wheelbase of 157 inches and a track of 56 inches. With an overall length of around 193 inches and standing almost nine feet high, the vehicle weighed in at around 3.6 tons. Dubbed the "Dernburg", it had permanent all-wheel drive and four-wheel steering to make the monstrous machine more maneuverable.

Alongside a number of six-wheeled passenger vehicles with four driven rear wheels (6x4 drive principle), the 30s saw the birth of the G5. By the standards of the day, the 4x4 vehicle was state-of-the-art. It had all-wheel drive and an advanced five-speed transmission. To make it more maneuverable on rough terrain, it was equipped with manually-activated four-wheel steering. Several of these vehicles were put into service by the German mountain rescue service, with some of them still in use well after the Second World War.

The modern history of Mercedes-Benz all-wheel drive vehicles undoubtedly began in 1979 with the arrival of the G-Model. At its market launch in early 1979, there were four engine options available with output ranging from 72 hp to 150 hp, as either cabriolet or station wagon with a short or long wheelbase. 1989 saw a significant development - alongside the redesigned original with the internal reference "Series 461", which subsequently became the highly capable base model for utility applications, Mercedes launched the range dubbed "Series 463". With new, permanent all-wheel drive, ABS, limited-slip differential on the front and rear axles, as well as a 100 percent locking center diff, it made a very clear technical statement. Since 2001, the G-Class has also been equipped with pioneering stability, traction and brake control systems ESP®, 4ETS and brake assist. The G-Class résumé is positively teeming with superlatives. It has won the Paris-Dakar Rally, serves as Papal transportation, wins consumer awards left right and center and formed the gene pool for the entire Mercedes-Benz SUV family line. And that's not all - with its model life of 30 years plus, the "G" is far and away the longest-serving model range in Mercedes-Benz history.










Credits: Mercedes-Benz USA

Copyright © 2012, Mercedes-Benz-Blog. All rights reserved.

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The New Vodafone McLaren Mercedes MP4-27: All the essential data and pictures

The continuation of our double world-champion driver line-up, further consolidation of our championship-winning engineering team and a subtle, yet deep-reaching technical update of our new MP4-27 car all underpin the world-class strength, experience and ambition that exists at Vodafone McLaren Mercedes ahead of the 2012 FIA Formula 1 World Championship.


This morning’s technical presentation of the MP4-27 at the McLaren Technology Centre showcased a natural evolution of last year’s six-race-winning car and underlined the message that the new season is very much one of growth through strength and continuity.

After finishing second in both the drivers’ and constructors’ championships in 2011, our aim for the new season is to fight for both world titles from the very start of this year’s campaign.

Evolutionary design of MP4-27 masks overhaul of all major systems

While the all-new Vodafone McLaren Mercedes MP4-27 closely resembles last year’s multiple race-winning car, the 2012 chassis has been substantially revised from the ground-up, with all major systems updated or re-designed for the new season.

The most evident visual differences include more tightly waisted rear bodywork, developed to improve flow to the rear of the car, and a revised cooling system, which re-directs the gearbox oil-cooler. Last year’s U-shaped sidepods have also been re-designed – a legacy of the FIA’s new exhaust regulations that redefine the shape of the rear bodywork.

Best driver line-up in Formula 1 retained for third successive season

Maintaining the belief in the validity of strengthened continuity, Vodafone McLaren Mercedes is the only team in Formula 1 whose driver line-up consists of two world champions: Jenson Button and Lewis Hamilton.

Between them, they have scored 22 grand prix victories for Vodafone McLaren Mercedes and are the strongest and most consistent driver line-up in the sport. Maintaining the partnership into a third successive season was merely a formality.

Strength drawn from consolidation of engineering and race teams

On the technical front, our exemplary engineering trio Tim Goss (director of engineering), Paddy Lowe (technical director) and Neil Oatley (director of design and development programmes) once more remain at the forefront of the drawing office. For 2012, they will be joined by sporting director Sam Michael, whose arrival coincides with the re-organisation of our trackside personnel roster to ensure both growth and development within the group.

Off-track: the most complete team in Formula 1

Away from the track, the team continues to develop, too: Vodafone McLaren Mercedes last year became the world’s first carbon-neutral Formula 1 team, efficiently managing its carbon footprint and purchasing carbon credits to completely offset its emissions.

As well as continuing relationships of record-breaking length with partners such as Hugo Boss (31 years), TAG Heuer (27 years), Kenwood (22 years), ExxonMobil (18 years), MercedesBenz (18 years), Hilton (eight years) and Vodafone (six years), our new strategic partnership with GlaxoSmithKline continues to gather pace. Development and planning continue on the McLaren GSK Centre for Applied Performance, while GSK’s Lucozade scientists are busy developing a groundbreaking cockpit drinks formula to hydrate our drivers during grands prix in 2012.

Finally, in a year when the world’s spotlight will shine on London and the 2012 Olympics, we’re proud that equipment and technology pioneered at the racetrack by Vodafone McLaren Mercedes and developed by McLaren Applied Technologies will be used by Team GB’s athletes in their quest for Gold this summer.

Following a one-day private shakedown, Jenson will begin track testing of the MP4-27 at Spain’s Circuito de Jerez on Tuesday February 7.

THE BEST DRIVER LINE-UP IN FORMULA 1

JENSON BUTTON (GBR)

- Age: 32
- Date of birth: January 19 1980

F1 highlights:
- Titles: 2009 world champion
- GPs: 208
- Wins: 12 (five for Vodafone McLaren Mercedes)
- Poles: 7
- FLs: 6
- Points: 811


- Websites: www.jensonbutton.com
- Twitter: @jensonbutton

Jenson Button joined Vodafone McLaren Mercedes as the newly crowned world champion at the end of the 2009 season and re-signed a new multi-year deal with the team last autumn.

His runner-up position in the 2011 world drivers’ championship, including victories in Hungary and Japan and a career-best last-to-first final-lap win in Canada, along with nine further podium finishes, underlined his credentials as one of the most respected and complete drivers in Formula 1 history.

The 2012 season will mark his 13th season in Formula 1.

Jenson said:

“With the regulations remaining relatively stable, we’ve really been able to focus on the detail with this year’s car. I still think we had a very fast package last year – it was very strong in certain areas – and our race pace was almost always fantastic, but we’re hoping for a further step forwards in 2012. With Mercedes-Benz, I think we also had the best overall engine and KERS Hybrid package in the pitlane.

“We were also able to continuously develop throughout the year to match Red Bull – and that shows that we have the knowledge, effort and resources to sustain our efforts across the course of a whole season, which can be crucial.

“I know that the whole team is extremely proud of the MP4-27. It may look like a direct evolution of last year’s car, but we’ve analysed every area of performance over the winter and the whole car has benefited from lots of fresh thinking and new ideas in every area. I’m really looking forward to getting behind the wheel in Spain next week.

“I know that everyone will be watching us very closely to see what progress we make during the pre-season tests, but I genuinely believe we have every reason to feel optimistic about the progress we’ve made and our competitiveness this year.”


LEWIS HAMILTON (GBR)

- Age: 27
- Date of birth: January 7 1985

F1 highlights:
- Titles: 2008 world champion
- GPs: 90
- Wins: 17 (all for Vodafone McLaren Mercedes)
- Poles: 19
- FLs: 11
- Points: 723


- Websites: www.lewishamilton.com
- Twitter: @lewishamilton

Lewis Hamilton, 27, made his Formula 1 debut with Vodafone McLaren Mercedes in 2007,
immediately making headlines for his supremely assured blend of speed, wisdom and sheer audacity on the racetrack.

A world champion at the age of 23 and, uniquely, a race winner in all of his five Formula 1 seasons, Lewis remains one of the fastest, most gifted and compelling drivers in F1 history.

At the end of 2011, he threw himself into a series of intense preparations ahead of the new season, training at high altitude in Colorado and at home in Switzerland.

Lewis said:

“The winter has been a great opportunity to recharge – I got away into the mountains, spent a lot of time hiking and running, improving my fitness and starting to prepare for the new year.

“It’s always great to get away from everything; change the scenery. And what’s great about Formula 1 is that you start each season with the baseline completely reset – everybody starts again from zero – and that always makes me so hungry.

“I’ve been keenly following the development of MP4-27 over the winter and I’ve been really encouraged by the results and the data that the engineers have been showing me. I think we already had a very strong base to build upon: Jenson and I won six races with MP4-26 last year and I think we’ve been able to retain all the strengths and the reliability of that design while also incorporating lots of improvements and new ideas into the new car.

“Of course, the biggest changes for 2012 are the modifications to the exhaust regulations – that will reduce the downforce and grip that we had last year, but it just puts the emphasis on the designers to try and claw some of that back in other areas.

“I get the feeling the MP4-27 is going to feel very new and exciting when we get to drive it for the first time.”


MARTIN WHITMARSH
Team principal, Vodafone McLaren Mercedes


“The 2012 season will be an important one for Vodafone McLaren Mercedes: having finished second in the constructors’ championship for the past two seasons, we’re determined to mount a sustained, hard challenge for both world titles.

“Our engineering team continues to develop and grow: while the key names who head the department are well known – Tim Goss, Paddy Lowe and Neil Oatley – it’s the strength in depth within the department that continually impresses. I’m extremely proud of our efforts to invest in and recruit young graduate engineers and to develop and school them in the ways of Formula 1.

“We have a fantastically committed team of individuals, and MP4-27 is the fruit of their labours – it’s a beautiful car, and one we feel is the perfect platform from which to launch our assault on the world championship. While there are clear visual changes to this year’s car, there’s greater change beneath the skin, with lots of fresh thinking applied to every major system. The car is pleasingly complete.

“I don’t think we want for anything from our drivers, either: in Jenson and Lewis, I believe we have the very best line-up in Formula 1 – the perfect blend of experience, speed and aggression. They complement each other perfectly.

“For 2012, we are well aware that Red Bull remains a very powerful and capable operation, and that both Ferrari and Mercedes AMG are ramping up their operational capacity. We have no room to be complacent – what you see today only scratches the surface of what we’re planning to deliver to the track both from an engineering and operational point of view throughout 2012.

“I’m pleased and confident that we’ve left no stone unturned in our quest for performance. Now, our focus invariably turns to the track as we evaluate MP4-27 ahead of the start of the 2012 season in Melbourne on March 18. These will be a fascinating three weeks.”


MP4-27 TECHNICAL SPECIFICATION

- Chassis: Monocoque McLaren-moulded carbonfibre composite incorporating front and side impact structures
- Front suspension: Inboard torsion bar/damper system operated by pushrod and bell crank with a double wishbone arrangement
- Rear suspension: Inboard torsion bar/damper system operated by pullrod and bell crank with a double wishbone arrangement
- Electronics: McLaren Electronic Systems. Including chassis control, engine control, data acquisition, dashboard, alternator, sensors, data analysis and telemetry.
- Bodywork: Carbon-fibre composite. Separate engine cover, sidepods and
floor. Structural nose with integral front wing. Driver-operated drag reduction system
- Tyres: Pirelli P Zero
- Radio: Kenwood
- Race wheels: Enkei
- Brake callipers: Akebono
- Master cylinders: Akebono
- Batteries: GS Yuasa Corporation
- Steering: McLaren power-assisted
- Instruments: McLaren Electronic Systems
- Paint solutions: AkzoNobel Car Refinishes using Sikkens products


Engine

- Type: Mercedes-Benz FO 108Z
- Capacity: 2.4 litres
- Cylinders: 8
- Maximum rpm: 18,000
- Bank angle: 90°
- Piston bore: maximum 98mm
- Number of valves: 32
- Fuel: ExxonMobil High Performance Unleaded (5.75% bio fuel)
- Spark plugs: NGK racing spark plugs specially designed for Formula 1
- Lubricants: Mobil 1 – combining greater performance, protection and cooling
with increased economy and lower emissions
- Weight: 95kg (minimum FIA regulation weight)


KERS Hybrid

- Type: Mercedes-Benz
- e-Motor: Engine-mounted electrical motor/generator
- ESS: Integrated energy storage cells and power electronics
- Power: 60 kW


Transmission

- Gearbox: McLaren-moulded carbon-fibre composite. Integral rear impact structure
- Gears: Seven forward and one reverse
- Gear selection: McLaren seamless shift, hand-operated
- Clutch: Carbon/carbon, hand-operated
- Lubricants: Mobil


TECHNICAL Q&A

Q&A with technical director Paddy Lowe and director of engineering Tim Goss

After a successful 2011 season, what were your main aims with the development of the MP4-27?
Paddy: “Our main objectives for the 2012 season were to optimise downforce despite the changes to the blown floor, and to improve our understanding and utilisation of the Pirelli tyres, which were new to us last year.

Tim: “Although you can’t see it, there’s a lot on this car that’s changed. However, this year has seen more of an evolutionary set of rules, so there’s less of the unpredictability that comes from balancing resources between seasons during a time of greater regulatory change.”

Paddy: “Every year, we sit down and want to design a race-winning car. We didn’t have the quickest car at the start of last season, but we’re doing everything possible to build the quickest car possible.”


What are the key visual differences between the 2011 and 2012 cars?
Tim: “I think the most obvious change is the loss of the U-shaped sidepod, which we pioneered on last year’s car. We reverted to a more conventional sidepod shape for this season because the U-shape was less suited to the new exhaust geometry restrictions. For 2012, the exhaust tailpipes now have to exit along the U-channel – so that particular feature was no longer really viable due to the new geometry restrictions. As a result, we decided to adopt a different approach to the way we feed the rear of the car. We have cleaned up the rollhoop area and now have much tighter rear bodywork.”

Were there any particular challenges in adapting to the new 2012 regulations?
Tim: “The regulations around the exhausts are very prescriptive: the exhausts must now exit within a very tight space at the rear of the car in order to minimise their aerodynamic influence. The final 100mm of the exhausts must be cylindrical – so they can no longer be oval, or flattened – and must be sited at a particular vertical and horizontal angle – between 10 and 30 degrees upwards. That's to direct the exhaust exit away from the floor.”

Paddy: “One of the more satisfying challenges was being able to develop and expand our knowledge of the Pirelli tyres. It’s our second season with Pirelli – 2011 was very much a learning year. We have used our experience from the past 12 months to design the car’s layout, aerodynamics and vehicle dynamics around improved tyre utilisation.”


Have there been knock-on effects to the design of the car due to the exhaust restrictions?
Tim: “They have the inevitable impact on the flow-fields around the rear of the car, yes. In previous years, the exhausts exited directly into the rear corner of the floor; we can’t do that any more so, as you’d expect, that changes the flow characteristics at the rear of the car. The knock-on effect is that all of the aerodynamic devices at the rear of the car have had to be redesigned.”

There have been a few departures from the technical team over the winter – are you comfortable with that?
Paddy: “I always say this, but Vodafone McLaren Mercedes is an extremely broad organisation. Bear in mind that we have 200 engineers working here – and, if those people all stayed in their job for 10 years, then we’d lose 20 engineers a year.

“Actually, we lose far fewer than that. It’s easy to focus on those leaving, but we have just as many people arriving here. Also, we pride ourselves on bringing on new, young and clever guys, helping them get into the business. Inevitably, at some point, a few of those feel the need to fly the nest and join the competition – it’s not something you can avoid. But we’ve got a very strong group of fantastically committed individuals here and we’re proud of the work we’ve all done on MP4-27.”


















































* Official photos and details courtesy of VODAFONE MCLAREN MERCEDES *

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