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Mercedes-AMG is embarking on the 2012 roadster season in inimitably dynamic
style: following on from the recent launch of the SL 63 AMG, the top
eight-cylinder model, there now comes the presentation of the new Mercedes-Benz
SL 65 AMG, the V12 roadster in the line-up from the Stuttgart-based
manufacturer. The AMG 6.0-litre V12 "biturbo" (twin-turbocharged) engine
develops a maximum output of 463 kW (630 hp) and maximum torque of 1000 newton
metres. The result: exceptional performance, impressive power delivery and
effortlessly superior dynamics. As with the SLS AMG super sports car, the use of
an all-aluminium bodyshell results in a drastic reduction in weight. The new SL
65 AMG is some 170 kilograms lighter than before. The expressive front section
is dominated by the new "twin blade" radiator grille and the front apron's lower
cross strut in high-sheen chrome.
"The combination of exclusive V12 dynamic performance and a refined roadster
driving experience was already the defining attribute of the predecessor model.
We are convinced that, with the new SL 65 AMG, we have developed an incomparably
exciting high-performance vehicle for the small, but loyal community of fans",
says Ola Källenius, CEO of Mercedes-AMG GmbH.
An important aspect of the new model is the intelligent lightweight construction
which also contributes to reducing the fuel consumption. At 11.6 litres per 100
kilometres (NEDC combined) it represents a saving of 2.4 litres or 17 percent
compared with the previous SL 65 AMG and simultaneously establishes a new
benchmark in the twelve-cylinder petrol engine segment. A major role in the
reduced fuel consumption figures is played by the AMG SPEEDSHIFT PLUS 7G-TRONIC
transmission, the ECO start/stop-function, in-engine measures to optimise
efficiency and alternator management. Despite the significantly reduced fuel
consumption, the maximum output of the AMG V12 6-litre biturbo engine is up from
450 kW (612 hp) to 463 kW (630 hp). The maximum torque is 1000 newton metres.
The unrivalled performance figures of the new SL 65 AMG translate into an
exceptional driving experience: acceleration from 0 to 100 km/h takes 4 seconds
with the 200 km/h mark attained after just 11.8 seconds. The top speed is 250
km/h (electronically limited). As well as offering stunning acceleration, the
AMG twelve-cylinder biturbo engine impresses with its smooth running
characteristics and its distinctive AMG V12 sound. It is a performance that
reconciles effortless superiority and stylishness to perfection.
The key data at a glance:
AMG 6-litre V12 biturbo engine with new technology
The AMG 6-litre V12 biturbo engine with the designation M 279 is based on the M
275 engine used previously and has been comprehensively revised for the new SL
65 AMG. New exhaust gas turbochargers with an increased spiral cross-section,
new manifolds and wastegate ducts with optimised flow characteristics increase
the engine output by 13 kW (18 hp). The multi-spark ignition with twelve double
ignition coils not only results in smoother running, but also enables even more
effective combustion in combination with a new engine management system with
higher performance and optimised cylinder heads. The resulting reduction in
exhaust emissions is also due to a large extent to the optimised catalytic
converter system. The newly developed AMG sports exhaust system, which has a
pipe layout with enhanced flow characteristics, is 3.2 kilograms lighter as a
result of a reduction in the wall thickness.
But it is not just the inner qualities of the AMG 6-litre V12 biturbo engine
that impress. The powerplant's looks are as inspiring as its performance: the
high-quality carbon-fibre and aluminium engine cover reflects the exceptional
character of the powerful twelve-cylinder unit.
Mercedes-Benz SL 65 AMG: Review (2/2)