At the heart of the new SLR McLaren Roadster 722 S is slightly tuned version of the supercharged 5.5-litre V8 engine that develops an output of 650 HP and 820 Nm (605-lbs/ft) of torque compared to the standard SLR McLaren Roadster’s 626 HP and 780 Nm respectively. Acceleration from standstill to 100 km/h (62 mph) comes in just 3.7 seconds, and 200 km/h (123 mph) is reached in 10.6 seconds while the maximum speed is 335 km/h or 208 mph.
In addition to increased power, the new SLR McLaren Roadster 722 S features a sportier suspension setup with stiffer spring and shock absorber configurations while the body has been lowered by 10mm at the front and rear. Furthermore, Merc’s engineers added a carbon fiber body kit to improve aerodynamics. The 722 S sits on a new set of lightweight 19-inch alloy wheels.
In the interior, the limited production Merc features new sports bucket seats upholstered in a combination of semi-aniline leather/Alcantara highlighted by contrasting red seams, embossed 722 S lettering on the head restraints and the likewise red seat belts. Moreover, the shift and parking brake levers are lined in suede leather while Mercedes-Benz also added plenty of carbon-fibre details.
The limited edition SLR McLaren Roadster 722 S will be available for order from January 1, 2009.
Even though Mercedes-Benz’s partnership with McLaren is coming to an end, the German automaker is trying to make the best of it by releasing yet another limited edition version. The rag-top SLR McLaren Roadster 722 S which features an upgraded 5.5-liter V8 engine developing 650 HP as well as a more dynamic suspension tuning and improved aerodynamics will be produced in a limited number of 150 vehicles. -Continued
In addition to increased power, the new SLR McLaren Roadster 722 S features a sportier suspension setup with stiffer spring and shock absorber configurations while the body has been lowered by 10mm at the front and rear. Furthermore, Merc’s engineers added a carbon fiber body kit to improve aerodynamics. The 722 S sits on a new set of lightweight 19-inch alloy wheels. 
