2012 Mercedes-Benz B-Class【Video】

The world premiere of the new B-Class (length/width/height: 4359/1786/1557 millimetres) will take place at the Frankfurt International Motor Show (13 to 25 September 2011). It will be making its way to European dealers in November 2011



The new model is lower than the outgoing B-Class, and should provide drivers with a sportier experience behind the wheel. It's 14'3" long, just over 5 feet high, and 5'10" wide, and Mercedes-Benz claims a drag coefficient of just 0.26, admirably low for a relatively short car.



The new Mercedes-Benz B Class gets a new direct injection turbocharged 1.6-liter four-cylinder engine coming in two different flavors, one producing 122 horsepower and 147 ft-lbs. of torque or 156 horsepower and 184 ft-lbs. of torque. Two new 1.8-liter turbocharged diesel engine options will also be available with 107 horsepower / 184 ft. lbs. of torque and a version with 134 horsepower / 221 ft. lbs. of torque.


















Press Release



Compact sports tourer: the new B-Class from Mercedes-Benz - Heralding a new era in the compact class



Stuttgart, Aug 25, 2011

• Agile: space and dynamics abound
• Efficient: drive system with new engines and dual clutch transmission
• Safe: radar-based collision warning system as standard, PRE-SAFE® featuring for the first time

Sensational: outstanding aerodynamics set a new benchmark in the segment

Substantially more agile and efficient, but as comfortable and spacious as ever - the new B-Class from Mercedes-Benz is a winner on all fronts. The vehicle's lower height and more upright seat position provide for a first impression that hints at the compact sports tourer's dynamic credentials.



With a new four-cylinder petrol engine featuring direct injection and turbocharging, a new diesel engine, a new dual clutch transmission, a new manual transmission and new assistance systems, the front-wheel-drive car also rings in a new technological era for compact cars from Mercedes-Benz. "No model change in the history of Mercedes-Benz has ever seen so many new developments introduced in one fell swoop," stresses Dr. Thomas Weber, Member of the Board of Management responsible for Group Research and Head of Development, Mercedes-Benz Cars. "Future B-Class customers will benefit from this quantum leap in terms of exemplary low fuel consumption and CO2 emissions combined with driving pleasure, plenty of space and the highest standard of safety that has ever been available in this class."



The world premiere of the new B-Class (length/width/height: 4359/1786/1557 millimetres) will take place at the Frankfurt International Motor Show (13 to 25 September 2011). It will be making its way to European dealers in November 2011.



The exterior design: perfect space in a most attractive guise



The new B-Class is a typical Mercedes sports tourer, offering plenty of space combined with impressive dynamic performance as a hatchback saloon. The characteristic lines of the exterior design indicate both of these attributes: front and rear sport a width-emphasizing design, with a wide, prominent grille and headlamps extending along the sides at the front while the rear end features a wide rear window, two-piece tail lights with horizontally offset meander and a large tailgate with low loading sill.



The new sportiness and the outstanding aerodynamics are particularly evident in the side line: the bonnet flows seamlessly into the A-pillar and the roof line descends sleekly to the striking roof spoiler. The roof features a swage line which lends the vehicle a longer appearance. The pronounced wheel arches offset by dynamic feature lines under the beltline are a sporty interpretation of the current design line from Mercedes-Benz. The bottom edge of the body features dynamic side skirts which add a light touch to the vehicle's appearance. Refined details such as the exquisitely designed headlamps with the new spotlight element confirm the brand's unmistakable premium credentials which shine through in the compact segment, too.



Outstanding aerodynamics: astounding cd value despite station wagon rear end

An outstanding drag coefficient of cd = 0.26 places the new B-Class at the forefront of its market segment. Apart from the aerodynamic exterior design, numerous optimisation measures on points of detail such as the air flow around the front wheels, the underbody design and the cooling air flow are also crucial contributory factors to this excellent aerodynamic performance. Patents are pending for innovative details such as the serrated wheel arch spoiler. With the optional ECO Technology package which will be available in due course, the B-Class is even on a par with the world-class aerodynamic credentials of the E-Class Coupé, attaining a drag coefficient of cd = 0.24 which is nothing short of sensational for a vehicle with a station wagon rear end.



New concept: lower overall height but more space inside



The new vehicle concept underscores the dynamic aspirations of the new B-Class. The most striking aspect is the reduced height: at 1557 millimetres, the new model crouches almost five centimetres lower on the road than its predecessor. The seat height in relation to the road has also been reduced (minus 86 mm) in order to facilitate boarding, while maintaining a clear overview of the vehicle's contours.



In response to requests from many customers, the sitting position is more upright, however. At the same time, the headroom has been further improved. With maximum headroom of 1047 mm at the front (without sliding roof), the B-Class is among the most spacious cars in its segment in this discipline, too. The ergonomically expedient more upright sitting position in combination with a lowering of the vehicle's floor at the rear leads to a segment-leading degree of legroom (976 mm) which even surpasses that of the S- and E-Class.



The B-Class is optionally available with the so-called EASY-VARIO-PLUS system. This enables simple reorganisation of the interior so as to enable the transportation of bulky items. Features of the EASY-VARIO-PLUS system include fore/aft adjustment of the rear seats by up to 140 millimetres (thereby increasing the luggage compartment volume from 488 to 666 litres) and a front passenger seat whose backrest can be folded forward onto the seat cushion.



The interior design: superior quality in a new dimension



High-quality materials and finely structured surfaces, stylish details, precision workmanship and a new spaciousness - the interior of the B-Class defines a whole new benchmark in the compact segment.



Many features have been the reserve of higher classes of vehicle to date and embody Mercedes-Benz's special definition of quality and aesthetics. The dashboard is optionally available in ARTICO man-made leather finish and features stitching, for example. Four equipment packages (Chrome, Sports, Exclusive and Night package) enable individualisation according to personal tastes.



In the interior, the large, three-dimensional trim covering the entire dashboard first strikes the eye. It is available in four variants, covering a broad spectrum from modern through sporty to classic. Common to all versions is a high-class appeal combining an attractive look and feel with easy care and durability.



The three large round vents in the middle and their uniquely designed cruciform nozzles add a sporty attribute to the interior's emotional design idiom. The display, which is available in two sizes (5.8- and 7-inch) appears to hover over the vents. With its stylish design - the trim frame with galvanised finish contrasting with the piano black of the front panel - and slender lines, the colour display (TFT) is a highly attractive feature in the cockpit.



The 3-spoke steering wheel, which always incorporates a silver chrome insert in the middle spoke, the instrument cluster with four analogue round dials and suspended pointers in 6 o'clock position and the seats with contrasting stitching underscore the sporty character.



The drive: designed for maximum efficiency



The new B-Class features new petrol and diesel engines as well as new manual and automatic transmissions. All transmissions and engines have been developed in-house, with production taking place at the plants in Stuttgart-Untertürkheim and -Hedelfingen, Rastatt/Baden, Gaggenau/Baden and Kölleda/Thuringia. The simultaneous development process enabled perfect coordination of engines and transmissions, e.g. with regard to implementation of the ECO start/stop function which features as standard on all B-Class models.



Common features of the new drive systems are the use of state-of-the-art technologies for maximum efficiency, very smooth running, high tractive power right from low revs, sustainability in terms of impending emissions standards and low weight. For the purposes of transverse installation the engines, all of which are turbocharged, and the two transmissions are very compactly designed, providing the B-Class with an exemplary small turning circle for a front-wheel drive vehicle of eleven metres. The engine and transmission suspension disposes of a four-point mounting system comprising engine mount, transmission mount and two self-aligning supports. This

suspension system has been designed specifically to meet the requirements of the high-torque engines with regard to minimum noise levels. The hydraulic damping integrated in the transmission mount is a key contributory factor to the exceptionally high ride comfort.



The new four-cylinder petrol engines (internal designation M270) mark the launch of a completely new engine series. The combustion process is based on the third-generation Mercedes-Benz direct injection system which was introduced last year with the BlueDIRECT V6 and V8 engines. Its use in the B-Class marks this technology's debut in the compact segment. The new four-cylinder engines have been designed for both transverse and longitudinal installation. In the new B-Class they are initially available with a displacement of 1.6 litres, as the B 180 rated at 90 kW (122 hp) and the B 200 with an output of 115 kW (156 hp). Their maximum torque of 200 and 250 Nm respectively is available from an engine speed of 1250 rpm.



The new four-cylinder diesel engine is a further development of the OM651 deployed in the C- to the S-Class, a common rail direct-injection engine of the third generation. With its displacement scaled down to 1.8 litres and numerous optimised points of detail, this is the first time that the compression-ignition engine has been mounted transversely in a Mercedes-Benz car. The B 180 CDI generates 80 kW (109 hp) of power, while the B 200 CDI has an output of 100 kW (136 hp). The maximum torque stands at 250 Nm from 1400 rpm for the 80 kW variant and 300 Nm from 1600 rpm for the 100 kW variant.



Another Mercedes-Benz premiere is the new 7G-DCT dual clutch transmission in the

B-Class. This transmission is extremely compact, extremely variable with regard to adaptation of the engine speed thanks to seven gears, features an electric oil pump for start/stop capability, shifts gear without any interruptions in tractive power and combines the comfort of an automatic with the efficiency of a manual transmission.



The new 6-speed manual transmission designed along similarly compact lines as a three-shaft transmission is a close relative of the DCT. Extremely easy gear shifting, low shift forces, low internal friction and a low weight are among its most important characteristics.



The chassis and suspension: refined sportiness now for the sports tourer, too



"Fascinatingly agile" is the assessment of all test drivers who have put the new B-Class through its paces to date. Three factors are instrumental to the substantially enhanced dynamic performance in comparison to its predecessor, which does not come at the cost of any compromises on comfort: the lowered centre of gravity, the new four-link rear axle and the upgraded ESP® Electronic Stability Programme. A sports suspension is optionally available for further enhanced agility. The centre of gravity has been lowered by a further 20 mm and the suspension additionally features sports dampers with amplitude-selective damping and a Direct-Steer system to emphasize the car's sporty character.



Steering: mechanical with electric assistance



The electromechanical steering of the B-Class has been redesigned. The electric motor of the servo assistance system is now located directly on the steering gear as a dual pinion EPS system, thereby optimising the package as a whole. A Direct-Steer system is available in combination with the sports package. The steering ratio becomes noticeably more direct at greater steering angles, enhancing the vehicle's handling and agility substantially.



The electromechanical steering system makes an important contribution to the vehicle's overall efficiency, as the steering assist function only requires energy when steering actually takes place.



New assistance and braking system reduces the risk of rear-end collisions



As a world first in the compact segment, the B-Class features a radar-based collision warning system with adaptive Brake Assist as standard, which lowers the risk of rear-end collisions. The COLLISION PREVENTION ASSIST system outputs a visual and acoustic warning to alert a possibly distracted driver to identified obstacles, and prepares Brake Assist for the most precise possible braking response. This is initiated as soon as the driver emphatically operates the brake pedal.



In contrast to systems currently on the market in the compact class, the new COLLISION PREVENTION ASSIST brake assist feature is not merely a system intended to minimise minor damage in urban traffic. Rather, this innovative solution is aimed at protecting motorists from typical rear-end collisions in dangerous traffic situations. Mercedes-Benz expects the new safety system to have a significant positive effect on accident statistics.



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



Adaptive Headlamp Assist



Blind Spot Assist and Lane Keeping Assist

ATTENTION ASSIST (standard)

Speed Limit Assist (speed limit sign recognition)

Active Parking Assist

Brake HOLD function (standard with 7G-DCT)

Hill Hold function

LINGUATRONIC

Reversing camera

DISTRONIC PLUS

Premiere in the compact class: PRE-SAFE® available for the first time

The PRE-SAFE®preventive occupant protection system which features in the

B-Class is available for the first time in this vehicle category. This represents a further step in the ongoing democratisation of this innovation, which was premiered in the S-Class in 2002.



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 scope of restraint facilities takes special account of the B-Class' use as a family car. Great importance has been attached to the safety of the rear occupants. Belt tensioners, belt-force limiters and belt height adjusters come as standard on the outer seats. Rear sidebags are optionally available. Integrated child seats and automatic child seat recognition are available as in the predecessor. Driver and co-driver are provided with new pelvis bags which are able to cover the pelvis and the entire upper part of the body. For head protection, a windowbag is fitted as standard.



COMAND Online multimedia system with internet access



Internet access, the convenient LINGUATRONIC voice control system, two navigation solutions tailored to different budgets, connection for mobile audio devices and an intuitive operating concept - the information and communication systems in the

B-Class offers excellent user-friendliness and a superior level of functionality which has been the reserve of higher categories of vehicle to date. It is the new multimedia generation from Mercedes-Benz which delivers these standards. The operating concept featuring the turn/push control in front of the armrest and the control knob on the head unit is also familiar from other Mercedes model series.



The COMAND Online multimedia system offers internet access. Customers can either surf the web as they wish while the car is stationary or call up a Mercedes-Benz app whose particularly fast page loading and simple operation make it suitable for use while driving. Integrated apps include GoogleTM Local Search and Weather, and the facility for downloading a route which has previously been configured on a PC using Google Maps and transmitted to the car.



All set for the future: modular "Energy Space" concept



The modular "Energy Space" concept means that the new B-Class is already designed to accommodate versions with an alternative drive: appropriate interfaces in the body shell enable the main floor panel to be modified and a step to be produced for the versions with alternative drive. An underfloor compartment covering part of the area under the rear bench seat offers space for alternative energy accumulators.

2012 Mercedes Benz SLK55 AMG

Mercedes-Benz has unveiled the new 2012 SLK55 AMG. which will debut at the Frankfurt Motor Show,



Dubbed the SLK55 AMG, the new car boasts a 5.5-liter V8 that cranks out 415 horsepower at 6,800 rpm and 398 lb-ft. of torque at 4,500 rpm, good enough to help the little droptop scoot to 60 mph in a mere 4.5 seconds before topping out at an electronically limited 155 mph.



The special feature of the SLK is the cylinder deactivation: If the full power of the engine isn’t necessary, it is able to shut off 4 cylinders -giving fuel savings over 30 percent. The cylinder deactivation can be switched within 30 milliseconds and provides 230 Nm of torque and has 800-3600 U / min available when the driver activates “C” Controlled Efficiency.



An AMG body kit includes a new front apron with larger air intakes and LED running lights, dark-lens headlamps, side vents with chrome-plated fins, side sills, rear lip spoiler and rear apron with a black diffuser.



According to the Mercedes, the new SLK 55 AMG completes the standard 0-100km/h (62mph) sprint in 4.6 seconds and reaches an electronically limited top speed of 250km/h (155mph).

Press Release

The 2012 Mercedes-Benz SLK55 AMG is the most powerful SLK of all time. Its new AMG 5.5-liter V8 engine featuring cylinder shutoff combines the ultimate in performance with the lowest possible fuel consumption. With a peak output of 415 hp and maximum torque of 398 lb-ft, the 2012 SLK55 AMG is poised to outperform all of its direct competitors. High-performance driving is ensured thanks to the AMG sports suspension with Direct-Steer system, Torque Vectoring Brakes and 3-stage ESP®, as well as the AMG high-performance braking system. The 2012 SLK55 AMG will arrive in U.S. showrooms in early 2012.

Forming part of the third-generation of the SLK launched in June, the new AMG model catches the eye at first glance: distinctive AMG light-alloy wheels, exclusive AMG body styling with AMG spoiler lip and two chrome-plated twin tailpipes at the rear complement the classic roadster proportions, while adding a distinct athletic touch. The expressive design of the 2012 SLK55 AMG is both eye-catching and unmistakable.

The SLK55 AMG is the perfect embodiment of the new AMG brand claim of “Driving Performance”: in the compact high-performance Roadster segment there is nothing to compare to its combination of tangible driving dynamics, superior sportiness, unique high-technology and low fuel consumption. The SLK55 AMG accelerates from zero to 60 mph in 4.5 seconds, and reaches a top speed of 155 mph (electronically limited).

Key figures at a glance

	2012 SLK55 AMG
Displacement	5,461 cc
Bore x stroke	3.86 in x 3.56 in
Compression ratio	12.6 : 1
Output	415 hp at 6,800 rpm
Max. torque	398 lb-ft at 4,500 rpm
Engine weight (dry)	412 lbs
Acceleration	0 – 60 mph 4.5 s
Top speed	155 mph**
* provisional figures; ** electronically limited

Helping to set new fuel efficiency standards for V8′s, the 5.5 liter engine combines low consumption figures with superior power delivery and the typical exhaust growl which only a large-displacement eight-cylinder engine can produce.

In line with its “AMG Performance 2015″ strategy, the new V8 engine continues to reduce both the fuel consumption and emissions of new models over the next few years – while reaching new heights with the central brand claim of “Driving Performance”. At the same time, AMG is also demonstrating its social responsibility with the M152 engine.

New naturally aspirated eight-cylinder closely related to the V8 biturbo

The new M152 is based on the AMG M157 5.5-liter V8 biturbo engine presented in 2010, which powers the E63 AMG, CLS63 AMG, S63 AMG and CL63 AMG. Numerous design features are identical, such as the displacement, bore/stroke, distance between cylinders, ECO stop/start system and direct gasoline injection technology. Distinguishing features versus the M157 include the new intake air ducting, new cylinder heads, the modified valve drive, an adapted oil supply system and an optimized crankcase.

Exclusive combination of advanced technologies

The high-tech M152 motor dazzles with a combination of advanced technologies which is unequalled anywhere in the world. No other gasoline engine features direct injection at a pressure of 2,900 psi, spray-guided combustion and piezo injectors, all in conjunction with map-controlled cylinder shut-off, an all-aluminum crankcase with “spectacle” honing, fourvalve technology with continuous camshaft adjustment, a high compression ratio of 12.6 : 1, a stop/start system and generator management – while revving to a maximum speed of over 7,000 rpm. All of these features lead to high thermodynamic efficiency which is essential for high fuel efficiency and low exhaust emissions. Using a large-displacement, naturally-aspirated eight-cylinder engine with cylinder shut-off resolves the trade-off between high output/torque delivery and low fuel consumption figures.

AMG Cylinder Management

The AMG Cylinder Management cylinder shut-off system – developed completely by Mercedes-AMG – significantly improves efficiency: cylinders two, three, five and eight are cut off under partial load, which lowers fuel consumption considerably. In similar form, this technology is also used in the 750-hp V8 engines used in Formula 1. As efficiency also plays a major role at the pinnacle of motor racing, two or four of the eight cylinders are cut off e.g. when cornering at slow speed, during Safety Car laps or for pit stops.

The cylinder shut-off function is available over a wide engine speed range from 800 to 3,600 rpm if the driver has selected transmission mode “C” – Controlled Efficiency. The AMG main menu in the instrument cluster informs the driver whether cylinder shut-off is active, and whether the engine is currently running in four or eight-cylinder mode. No less than 170 lb-ft of torque is still available in four-cylinder mode – enough power to ensure plenty of acceleration in most driving situations. As soon as the driver has a need for more power and leaves the partial load range, cylinders two, three, five and eight are activated. The switch from four to eight-cylinder operation is immediate and imperceptible, leading to no loss of occupant comfort. At an engine speed of 3,600 rpm the activation process takes no more than 30 milliseconds.

Valves closed, fuel delivery and ignition deactivated

Cylinder shut-off is made possible by the intelligent engine management system, with 16 hydraulically compensating actuators and a sophisticated oil supply system in the cylinder head. The compensating actuators are integrated into the cylinder head, and keep the intake and exhaust valves of cylinders two, three, five and eight closed when cylinder shut-off is active. At the same time their fuel supply and ignition are deactivated. This not only enables the loadchange losses of the four deactivated cylinders to be reduced, but also increases the efficiency of the four remaining cylinders. This is because the operating point is transferred to the higher load range. The actuators are compact and lightweight, allowing taut valve train operation and engine speeds up to 7,200 rpm.

All-aluminum crankcase with Silitec cylinder liners

The crankcase of the new AMG 5.5-liter V8 engine features a diecast allaluminum construction. The low (dry) engine weight of just 412 lbs is the result of uncompromising lightweight construction methods. The bearing covers for the main crankshaft bearings are grey cast iron, and are bolted to the crankcase, as well as on the sides, for high rigidity.

The piston rings are carbon-coated to minimize internal friction and reduce wear. Cast-in Silitec cylinder liners ensure low friction for the eight pistons. Unique “Spectacle” honing is another measure to reduce friction and therefore fuel consumption: in this sophisticated and complex process, the cylinder liners receive their mechanical surface treatment when already bolted in place. As honing would no longer be possible with the cylinder head installed, a jig resembling spectacles is bolted to the crankcase. The cylinder liners distort as if the cylinder head were in place, and are only then given their mechanical surface treatment. As a result, any static distortion of the cylinder liners caused by tightening the cylinder head bolts can be completely eliminated.

Other measures to optimize efficiency:

• weight-optimized cast aluminum pistons with special piston skirt coating
• special ventilation holes in the crankcase
• oil pump with electrically controlled pressure stage
• separate oil pump for cylinder shut-off as a controllable, low-friction vane cell pump
• engine cooling using especially efficient cross-flow principle
• electronically controlled fuel pressure, fully variable and demand-related between 1,450 and 2,900 psi

The forged crankshaft of high-grade 38MnS6BY steel alloy rotates in five main bearings, has eight counterweights and has been optimized with respect to torsional rigidity, inertia, low rotating masses and a long operating life. A twomass viscous damper mounted at the front reliably eliminates vibrations. Each connecting rod journal on the crankshaft carries two forged, cracked connecting rods.

Four-valve technology with variable camshaft adjustment

Perfect charging of the combustion chambers is provided by large intake and exhaust valves, four per cylinder. The exhaust valves, which are subject to high thermal loads, are hollow and sodium-cooled. Four overhead camshafts operate the 32 valves via low-maintenance, low-friction cam followers. The infinitely variable camshaft adjustment within a range of 40 degrees on the intake and exhaust sides adapts to engine load and engine speed, leading to high output and torque values. This also provides consistent idling at a low speed. Depending on the engine speed, valve overlap can be varied for the best possible fuel/air supply to the combustion chambers and efficient removal of the exhaust gases. The variable camshaft adjustment is carried out hydraulically via four pivoting actuators. These are electromagnetically activated and controlled by the engine control unit. The camshafts are driven by three high-performance silent chains, which have considerable advantages in terms of noise comfort compared with cylinder roller chains.

Controlled Efficiency stop/start function as standard

The Controlled Efficiency stop/start function further contributes to the low fuel consumption. This system is standard equipment on the SLK55 AMG and active in the fuel economy transmission mode “C”. Once the driver brakes to a stop e.g. at a red traffic light, the V8 engine is automatically switched off. Once the brake pedal is released or the accelerator is depressed, the engine is immediately restarted and the car is able to move off quickly. Intelligent technology provides a comfortable and immediate starting procedure: a crankshaft sensor recognizes the direction of rotation and registers the resting position of all eight pistons. For an automatic engine start, the cylinder with the most favorable piston position receives an injection of fuel into its combustion chamber. The precise piezo-electric injectors greatly assist this process, as they make especially fast starts possible. The M152 always starts in eight-cylinder operation.

A framed “ECO” symbol in the AMG main menu shows the driver that the Controlled Efficiency stop/start function is active. When cylinder shut-off is active, the driver is informed by the symbol “ECO4″, while “ECO8″ stands for eight-cylinder operation. In the two more performance-oriented driving modes “S” (Sport) and “M” (Manual), the stop/start function is always deactivated. If required, the driver can also switch it off while in “C” mode as well. In this case neither a “stop/start” nor an “ECO” symbol appears.

Alternator management helps to save fuel

An alternator management system makes a further contribution to fuel economy: whenever the V8 engine is in overrun or when braking, kinetic energy is used to charge the battery rather than wasted as heat. In all other operating modes a combination of onboard network and alternator management enables the electrical system to be kept at a low voltage.

New AMG sports exhaust system with integrated exhaust flaps

AMG is premiering a new sports exhaust system featuring an exhaust flap on each side. This technology resolves the trade off between an emotional exhaust note during spirited driving and a more discreet engine sound in the partial load range. The main focus of the sound design was to achieve a perfect synthesis of perceptible performance and the long-distance comfort that is a hallmark of Mercedes.

Each of the two rear silencers has a flap which is variably activated on a logiccontrolled basis depending on the driver’s power requirement and the engine speed. At low loads and engine speeds below 2,000 rpm the flaps remain closed. This causes the exhaust gases to cover a longer distance and flow through an additional damping element, so that the engine sound is pleasantly subdued and disruptive frequencies are effectively suppressed – resulting in a mellow tone especially in four-cylinder operation when cylinder shut-off is active.

When the driver accelerates, the flaps open at an angle of 15, then 30 and up to 50 degrees so that some of the exhaust gases cover a short distance while the remaining follow the longer, acoustically dampened path producing a sonorous engine note. Under full load at higher engine speeds in eight-cylinder mode, both flaps are fully opened so that the occupants are able to enjoy the distinct muscular sound typical of an AMG V8. This emphasizes the performance potential of the 415 hp naturally aspirated AMG eight-cylinder engine.

The two-pipe AMG sports exhaust system with two chromed twin tailpipes has a pipe diameter of 2.56 inches from the manifolds to the pre-silencer. The diameter is reduced to 2.36 inches from the pre-silencer to the rear silencers.

Effective emissions technology with new catalytic converter boxes

Low exhaust emissions, compliance with country-specific standards and a characteristic engine sound – the requirements for the exhaust system of the new, naturally aspirated AMG 5.5-liter V8 engine were multiple and complex. The 2012 SLK55 AMG complies with the current Euro-5 emission standard, as well as meeting all the requirements of the US market (LEV-III standard, On- Board Diagnosis II).

Air gap-insulated manifolds ensure a rapid catalytic converter response. For efficiency and to save space, this design has a tandem catalytic converter housing on each side of the vehicle: adjacent to the firewall, two thin-walled ceramic substrates are grouped into each housing. This setup makes the previous, additional underbody catalytic converters unnecessary. The two ceramic substrates differ to ensure rapid and efficient emissions control: the front one is coated with palladium, while the rear one has a bimetal coating of palladium and rhodium. One lambda sensor per row of cylinders is located in front of each catalytic converter housing, and there is a lambda diagnostic sensor between each of the two thin-walled substrates.

Highly variable: the AMG SPEEDSHIFT PLUS 7G-TRONIC

Power is transferred to the rear wheels by means of the AMG SPEEDSHIFT PLUS 7G-TRONIC automatic transmission which features three transmission modes: “Controlled Efficiency” (C), Sport (S) and Manual (M). The automatic rev-matching function when downshifting as well as the brief, precisely defined interruption of ignition and injection when upshifting under full load shorten shift times and increase emotional appeal. A double turbine torsional damper with centrifugal pendulum adapts to engine speed and helps minimize vibrations in four-cylinder operation as well as enhances comfort.

Perfect combination: highly expressive driving style and comfortable cruising

The AMG sports suspension with Torque Vectoring Brakes and AMG Direct- Steer system provides both impressive lateral dynamics as well as agile handling. Looking for a highly aggressive driving style or comfortable cruising? The new SLK55 AMG is able to offer both. Independent suspension struts with stiffer spring/damper tuning, torque strut bearings on the front axle featuring higher rigidity, stiffer stabilizers at all four corners as well as a more negative camber on the rear axle result in high cornering speeds and low body roll in fast S-shaped bends.

In critical cornering conditions, the Torque Vectoring Brakes produce a defined rotational movement of the vehicle about the vertical axis in fractions of seconds, through selective brake actuation at the rear wheel on the inside of the bend. This results in the SLK55 AMG steering into the turn precisely and under full control, without any compromises where performance is concerned. Complementing this feature is the AMG Direct-Steer system which enhances handling and agility compared with the standard steering, while also reducing the amount of physical effort required when parking. A new power steering pump helps to reduce fuel consumption by using energy only when the driver is actually steering. In addition, the AMG Direct-Steer system has a parameter function adapted to match the AMG sports suspension. This results in optimum response from the central position, outstanding road feel and sharp handling in all driving situations.

The AMG-exclusive 3-stage ESP® gives individual control choices at the touch of a button: the ESP® button in the center console allows the driver to choose between “ESP ON”, “SPORT Handling Mode” and “ESP OFF”. The AMG highperformance brake system has internally ventilated and perforated brake discs on all wheels, measuring 14.2 in. x 1.4 in. at the front and 13 in. x .9 in. at the rear. The system is characterized by outstanding responsiveness, short stopping distances and excellent fatigue resistance.

Optional AMG Handling Package for even greater driving dynamics

The optionally available AMG Handling Package enhances the vehicle’s sportiness even further. It comprises an AMG Performance suspension with stiffer tuning, an AMG rear axle differential lock, two-piece brake discs at the front and a three-spoke AMG Performance steering wheel finished in premium leather with Alcantara® inserts in the grip areas.

Unmistakable: uniquely styled design and appointments

Classic roadster proportions with typical AMG design characteristics as well as a hint of the SLS AMG -are striking visual highlights of the 2012 SLK55 AMG. The AMG designers have complemented the exciting basic forms of the long hood, the greenhouse positioned well to the rear and crisp rear section with typical AMG styling at the front, sides and rear. The new AMG front apron has large air inlets and AMG-specific LED daytime running lights. Inspired by the SLS AMG super sports car, the wide radiator grill features a large, centrally-positioned Mercedes star. In the case of the SLK55 AMG, the slats in the front apron and the lower cross strut are painted in a high-gloss black finish. Darkened clear-lens headlamps and darkened bicolor tail lamps also come as standard exclusively on the top-of-the-range V8 model. Bi-Xenon headlights with Active Curve Illumination are also available as an optional extra.

The vent grilles with chrome-plated fins in the front fenders are not only reminiscent of the SLS AMG, but also evoke memories of the famous Mercedes- Benz 300 SL Roadster from the 1950s. The “V8 AMG” lettering beneath the grilles highlight the top-of-the-range eight-cylinder model from the rest of the SLK model series. AMG-specific, distinctively styled side sill panels continue the design of the front apron through to the new rear apron. With its own unique shape, black diffuser insert with three fins as well as the two chromeplated twin tailpipes of the AMG sports exhaust system, it gives a distinctive finishing touch to the vehicle. The spoiler lip on the trunk lid, painted in the vehicle body color, reduces lift at the rear axle and thereby increases driving stability at high speeds.

Inspired by the SLS AMG: high-quality, stylish interior

Functional, stylish, high-quality: the interior design of the SLK55 AMG is also reminiscent of its bigger brother, the SLS AMG Roadster. Associations with the super sports car are evoked courtesy of the four air vents in the style of jet engines, as well as the center console finished in brushed aluminum. Placed in the center of the dashboard is an AMG-specific analog clock featuring an IWC design. The AMG Performance steering wheel, with its flattened top and bottom sections, also boasts metal trim, aluminum shift paddles and grip areas finished in perforated leather. The clearly-arranged AMG instrument cluster is positioned perfectly in the driver’s field of vision and features four circular instruments, distinctive dials and the AMG main menu. The button for the transmission modes C, S and M is also located in the center console.

The AMG sports seats feature optimized lateral support and premium leather upholstery with AMG badges in the backrests and standard AIRSCARF necklevel heating system.

Magical: the panorama roof with MAGIC SKY CONTROL

The standard retractable hardtop opens and closes in less than 20 seconds, transforming the open-top Roadster into a closed-top Coupe with rigid roof at the touch of a button. Alternatively, a panorama roof panel in tinted polycarbonate can also be chosen. The third variant is a world premiere – the panorama roof with MAGIC SKY CONTROL. This glass roof switches to light or dark as required at the press of a button. When activated it is virtually transparent, offering an open-air experience even in cold weather. In its dark state the roof provides welcome shade and prevents the interior from heating up from the sun’s intense rays. In other words: a comfortable atmosphere at the touch of a button.

The frames of the three roof variants are made of magnesium. This makes each roof around 13 lbs lighter than in the previous model, giving the car a lower center of gravity – which benefits its agility. A comfortable alternative to the standard wind-stop is the new AIRGUIDE pivoting wind-stop. It consists of pivoting transparent plastic wings which are attached to the back of the rollover bars. The advantage: no installation or removal effort required.

Exceptional position: modern assistance systems on board

The 2012 SLK55 AMG sets new standards when it comes to safety: a whole host of the latest assistance systems support the driver and help secure the new AMG Roadster’s exceptional position in its segment. Standard equipment includes new, fiber-reinforced roll-over bar, two-stage driver and front passenger airbags, headbags, thorax airbags, knee airbags, seat belt tensioner with belt force limiters, NECK-PRO crash-active head restraints, three-stage ESP® and also ATTENTION ASSIST drowsiness detection.

Further assistance systems are available on request:

• DISTRONIC PLUS: this proximity control system automatically maintains a set distance from the vehicle ahead, braking the SLK55 AMG to a stop if necessary and also accelerating the Roadster again.
• The PRE-SAFE® Brake detects the acute danger of a rear-end collision and prepares for autonomous braking. The system is active at speeds of between 19 and 124 mph when moving vehicles are detected in front of the car.

Three generations: the SLK made by AMG

The 2012 SLK55 AMG is already the third generation of the exclusively dynamic Roadster model made by AMG. It all started in 2001 with the SLK32 AMG. Its supercharged AMG V6 engine with a displacement of 3.2 liters produced 349 hp and maximum torque 332 lb-ft – as such, the SLK32 AMG was the most powerful vehicle among the competition.

At the end of 2004 this was followed by the SLK55 AMG. With its AMG 5.5-liter V8 engine, which developed 355 hp and 376 lb-ft of torque, it also took the lead in its segment. No other vehicle in this class offers a large-displacement eightcylinder engine – and Mercedes-AMG has remained consistently true to this philosophy with the successor model. The new 2012 SLK55 AMG will celebrate its U.S. market launch in early 2012.

2012 Mercedes-Benz SLK 250 CDI

Mercedes-Benz has released details of its upcoming SLK 250 CDI.The new SLK 250 CDI is no different in appearance from the gasoline models andmaintains the twin exhaust system.



Dubbed the SLK 250 CDI, the roadster employs a 204 horsepower, 368 lb-ft of torque version of Mercedes’ 2143cc four-cylinder diesel engine. Those figures make the SLK 250 CDI the most powerful diesel offering in its class.



The details of performance consist of 0 to 100 km/h sprint time of 6.7 seconds, and a top speed of 243 km/h. Additionally to that, with the excellent in-gear acceleration fitted to the car, SLK 250 CDI only needs 4.3 seconds to reach 120 km/h from 80 km/h. All running with 7G-TRONIC PLUS automatic transmission.



As for fuel economy, Mercedes-Benz claims that the SLK 250 CDI provides a combined fuel return of 4.9lt/100km (48 mpg US or 57.7 mpg UK) compared to the SLK 250 BlueEfficiency’s fuel economy rating of 6.2 lt/100 km (38 US mpg or 45.6mpg UK). To further enhance fuel efficiency, the SLK 250 CDI is also come with a start/stop system as standard.



The 2012 SLK 250 CDI is available in Germany from September 13 onward with prices starting at €41,828.50, VAT included.













Press Release



The new SLK 250 CDI: Sports car performance with the fuel economy of a sub-compact



Stuttgart, Aug 17, 2011



For the first time, Mercedes-Benz is offering the sporty SLK Roadster with a diesel engine. The 150 kW (204 hp) four-cylinder power unit puts the two-seater at the top of its class in numerous respects. With a fuel consumption of 4.9 litres per 100 kilometres, it is the most economical roadster in its segment. Thanks to its enormous torque of 500 newton metres it accelerates from zero to 100 km/h in 6.7 seconds, and delivers a top figure for acceleration from 80 to 120 km/h. The result is superior driving enjoyment both on winding country roads and on long motorway stretches. Like the other models in the latest SLK family, which was presented in January this year, it combines lively sportiness with high-quality appointments and excellent comfort.

Diesel drive and roadster excitement do not go together - or so a common misconception would have it. Mercedes-Benz impressively demonstrates the contrary with the new SLK 250 CDI. Its four-cylinder diesel engine with a displacement of 2143 cc generates an output of 150 kW (204 hp) and 500 newton metres of torque - as much as a petrol engine with twice the displacement would normally generate. This makes the new SLK 250 CDI the most powerful diesel model in its class, and gives the roadster the potential for extremely sporty performance.

Equipped with the standard 7G-TRONIC PLUS automatic transmission (a six-speed manual transmission will follow in the second quarter of next year), the diesel SLK sprints from zero to 100km/h in 6.7 seconds and achieves a top speed of 243 km/h. Moreover, the flexibility of the SLK 250 CDI is nothing short of phenomenal. Thanks to its enormous diesel torque it accelerates from 80 to 120 km/h in just 4.3 seconds - easily the best figure in this class, making for safe and effortless overtaking.

Apart from this, the SLK 250 CDI is the most economical and therefore environmentally compatible roadster in its segment. It is happy with 4.9 litres of diesel fuel per 100 kilometres (NEDC combined consumption), which corresponds to CO2 emissions of 128 g/km. In other words, the diesel SLK combines thoroughbred sports car performance with the fuel economy of a sub-compact. This guarantees great driving pleasure with great fuel efficiency.

The diesel engine achieves its exemplary output, torque, fuel consumption and emissions figures, as well as its highly impressive smoothness for a diesel unit, thanks to an extensive package of innovative technologies. These include fourth-generation common-rail injection with a rail pressure of 2000 bar and precise injection timing, as well as two-stage turbocharging. Like all SLK models, the SLK 250 CDI also features a start/stop system as standard.

The frugal fuel consumption makes the SLK 250 CDI a car with superior long-distance qualities. Using the European motorways, it is e.g. quite possible to drive from the North Sea to a beach on the Mediterranean non-stop. Very comfortable sports seats, a comfortable suspension setup and the largest luggage capacity in this segment also do their bit to create the right conditions.

As it shares the same genes with the other members of the successful SLK family, the SLK 250 CDI combines lightfooted sportiness with stylish comfort, a striking sports car design and absolute day-to-day suitability, while delivering top performance with exemplary ecology. This means that the diesel version too provides open-top driving enjoyment at an extraordinarily high level.

The SLK 250 CDI is likewise available with a choice of three versions of the famous vario-roof - one of them the panoramic vario-roof with MAGIC SKY CONTROL. This glass roof can be changed from dark to transparent at the touch of a button. There are also three suspension versions available: a conventional steel suspension, a sports suspension with a stiffer spring and damper setup or a suspension with an electronically controlled, fully automatic damping system. The latter is part of the Dynamic Handling package, which also includes the Direct-Steer system and the Torque Vectoring Brake developed by Mercedes-Benz for particularly agile and predictable handling characteristics.

Externally the new SLK 250 CDI is no different in appearance from the petrol models. It even retains the twin exhaust system, and therefore has the same exciting look for which all the SLK models are known.

The new SLK 250 CDI can be ordered from 13 September 2011. The price including VAT is € 41,828.50.