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Mercedes-Benz SL 63 AMG revealed

Mercedes-Benz SL 63 AMG revealed  
Filed under:
Coupes, Sports/GTs, Mercedes Benz
on 02/08/2008

Source: Mercedes-Benz


Mercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMGMercedes-Benz SL 63 AMG

Emotional performance courtesy of cutting-edge engineering: the new Mercedes-Benz SL 63 AMG in a nutshell. The roadster is powered by an AMG 6.3-litre V8 engine developing 525 hp and 630 Nm – which makes it today’s most powerful model with a V8 naturally aspirated engine in its class.


The SL 63 AMG comes exclusively with the all-new, innovative AMG SPEEDSHIFT MCT 7-speed sports transmission. The newly developed power transfer concept features a compact, wet start-up clutch that replaces the conventional torque converter. The resulting direct connection to the powertrain, together with the double-declutching and Race Start functions, guarantees an extremely emotional, supremely dynamic driving experience. The SL 63 AMG sets new standards in the open-top sports car segment thanks to this outstanding drive combination and the retuned, even more agile AMG sports suspension based on Active Body Control – turning it into the sportiest SL-Class ever.

The new SL 65 AMG will also be launched alongside the SL 63 AMG. Thanks to its 612 hp AMG 6.0-litre biturbo engine developing 1000 Nm of torque, the V12 top-of-the-line model delivers effortlessly superior refinement in its purest form. Both Mercedes-AMG SL-Class Roadsters also hold in store extraordinary thrills and breathtaking dynamism thanks to the hallmark AMG equipment features. The vario-roof, which opens in 16 seconds and is also available in an optional glass version, continues to ensure an unrivalled driving experience.

The AMG SPEEDSHIFT MCT 7-speed sports transmission is an all-new, unique concept, available exclusively in the new Mercedes-Benz SL 63 AMG. It combines the best of two worlds: the sporty, direct and agile feedback of a manual transmission and the maximum convenience of an automatic transmission. Fitted with seven speeds, four drive modes, a double-declutching and Race Start function, the AMG SPEEDSHIFT MCT 7‑speed sports transmission offers unprecedented versatility. MCT stands for Multi-Clutch Technology and only employs clutch elements to perform gearshifts.

The high-tech transmission is designed for high torque and maximum revs up to 7200 rpm. It also comes with sufficient reserves even under the highest loads thanks to its high-performance oil cooling system. An all-new, sophisticated electronic transmission control unit fully controls and monitors all processes. A new two-stage torsion damper effectively eliminates vibrations. The AMG SPEEDSHIFT MCT 7-speed sports transmission has been developed jointly by Mercedes-AMG GmbH and Daimler AG, although it will be used exclusively in AMG high-performance vehicles. It is produced at the Mercedes-Benz Esslingen-Hedelfingen production facility, Europe’s largest manufacturer of planetary gear sets.

Four drive modes for tailor-made driving pleasure

At the heart of the new AMG SPEEDSHIFT MCT 7-speed sports transmission lies the wet start-up clutch, which runs in an oil bath and replaces the previous torque converter. Thanks to its low rotational inertia, the transmission responds instantaneously and dynamically with no slip. Accelerator pedal movements trigger an instant traction response. Fitted with four drive modes: “C” (Comfort), “S” (Sport), “S+” (Sport plus) and “M” (Manual), the transmission provides gearshifting with no loss of tractive force and supports customised control strategies for maximum driving pleasure. In “C” mode the gearshifts are comfortable, coupled with a “soft” accelerator response set-up for outstandingly smooth power transfer. In “S” mode the engine and transmission interact with more "bite": the engine speed is allowed to reach a higher level in each gear; the downshifts also feel more spontaneous. The gearshifts are around 20 per cent faster than in “C” mode. Switching to “S+” mode cuts another 20 per cent off shift times, while “M” is the sportiest mode: here the AMG 6.3-litre V8 engine has even more bite, added to which the transmission shifts gear another 10 per cent faster – a reduction of 50 per cent compared with “C” mode. In “M” mode the gearshifts take just 100 milliseconds.

Ultra-fast, spontaneous multiple downshifts are another forte of the new MCT sports transmission. For instance, kickdown lets you move straight from seventh down to fourth gear or from fifth to second. In the “S” (Sport), “S+” (Sport plus) and “M” (Manual) modes the automatic double-declutching function is active. Every manual or automatic downshift is accompanied by precisely metered double-declutching – from “S” through “S+” to “M” incrementally. And this not only adds to the driver's emotional experience: the virtually load-free downshift minimises load-change reactions, which pays dividends particularly when braking into a bend on the racetrack.

New AMG DRIVE UNIT with innovative Race Start function

The new AMG DRIVE UNIT is the central control unit for the AMG SPEEDSHIFT MCT 7-speed sports transmission and all driving dynamics functions. The driver can change gears either using the new AMG selector lever with its leather/carbon-fibre finish, or by nudging the AMG steering-wheel shift paddles. On the left next to the selector lever is the electronic rotary switch to select the four drive modes including activation of the new Race Start function. Underneath are three buttons for additional functions: the first controls the ESP® function, the second the ABC suspension system. The third adorned with AMG lettering is used to store the selected transmission drive mode and the suspension set-up. Briefly pressing the AMG button brings up the configuration options, while holding down the button allows you to program the required set-ups.

The Race Start function takes driving dynamics to an entirely new level: it enables the SL 63 AMG driver to call on maximum acceleration, while ensuring optimum traction of the driven wheels. While the vehicle is at a standstill, the driver needs to activate the ESP® sports function and press the brake pedal with their left foot. Having preselected the Race Start program using the rotary switch, a confirmation message comes up on the AMG central display. The driver then simply needs to confirm the Race Start function by pulling the “Up” shift paddle once, fully depressing the accelerator and taking their foot off the brakes. The optimum start-up engine speed is set fully automatically and the SL 63 AMG accelerates away in an instant – as an option even up to the top speed. The driver does not need to shift gear manually; the AMG transmission changes gear with lightning-fast shift times.

AMG 6.3-litre V8 naturally aspirated engine with 525 hp

The AMG 6.3-litre V8 engine teams up with the AMG SPEEDSHIFT MCT 7-speed sports transmission to form a perfect partnership for dynamic driving pleasure and outstanding performance. The SL 63 AMG accelerates from 0 to 62 mph in 4.6 seconds before quickly going on to a top speed of 155 mph (electronically limited). The high-revving naturally aspirated engine generates 525 hp at 6800 rpm from a displacement of 6208 cc, delivering maximum torque of 630 Nm at 5200 rpm. The unique combination of high-revving concept and large displacement achieves the best of both worlds: high pulling power at low engine speeds coupled with exhilarating high-revving flexibility – right up to 7200 rpm.

The AMG V8 is packed with a wealth of fascinating racetrack technology, including the lightweight, extra-rigid closed-deck crankcase and cylinder walls with a revolutionary TWAS coating as well as the valve train designed for high engine speeds with bucket tappets in the cylinder heads. The vertical arrangement of the intake and exhaust ports together with the variable intake manifold featuring two integral throttle flaps results in superlative cylinder charging and high power output.

The sophisticated electronically controlled fuel supply provides a consummately spontaneous response to accelerator movements in all driving situations; the AMG sports exhaust with two oval, chromed twin tailpipes guarantees the characteristic AMG V8 vocals. The tri-metallic coating used in the catalytic converters results in a faster response from a cold start, more efficient emission control as well as superior long-term durability. The SL 63 AMG fulfils all standard exhaust emissions limits such as EU 4 and the specific requirements of the U.S. market (LEV-II, On-Board Diagnosis II and oxygen sensor diagnosis).



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