Top of the line in the exclusive 12-cylinder roadster segment is the Mercedes-Benz SL65 AMG launched alongside the Mercedes-Benz SL63 AMG. Its AMG 6.0-litre V12 biturbo engine produces 450 kW/612 hp with maximum torque of 1000 Newtonmetres - unrivalled figures even four years after the market launch. The Mercedes-Benz SL65 AMG accelerates from 0 to 100 km/h in just 4.2 seconds, impressive testimony to the outstanding power of the AMG V12 engine; top speed is 250 km/h (electronically limited). Power in the Mercedes-Benz SL65 AMG is transferred by the AMG SPEEDSHIFT five-speed automatic transmission with three drive modes; a multi-disc limited-slip differential with a lock factor of up to 30 percent also guarantees optimum traction. The vario-roof, which opens in 16 seconds and is also available in an optional glass version, continues to ensure an unrivalled driving experience.
Visual features which distinguish the V12 top-of-the-line model from the SL63 AMG include a lower transverse fin painted matt silver in the front apron, "V12 BITURBO" lettering on the matt-silver-painted trim panels on the front wings and the AMG sports exhaust with two chromed twin tailpipes featuring the V12 styling. The new AMG bodystyling including AMG bonnet and AMG spoiler lip is also part of the standard specification for the V12 top-of-the-line model. 255/35 R 19 (front) and 285/30 R 19 (rear) tyres are fitted to the new 19-inch AMG twin-spoke forged light-alloy wheels painted titanium grey with a mirror finish . In tune with its incomparable driving dynamics the Mercedes-Benz SL65 AMG comes with a large AMG high-performance braking system using ultra-high-performance composite brakes at the front and rear. The front wheels are equipped with 390 x 36-millimetre brake discs while 360 x 26-millimetre discs provide the deceleration at the rear.
The ultimate version of this car, the Mercedes-Benz SL65 AMG Black Series, 250 kg lighter and producing 493 kW/670 hp also made its debut in 2008.