- Image courtesy of Mercedes-Benz
Today's 4638 mm long SLS AMG coupé makes extensive use of aluminium in the construction of its body and chassis. These and other lightweight construction techniques keep the kerb weight down to a respectable 1620 kg. The 6.2 litre V8, given the code M159, is a development of the M156 engine found in many other AMG models, but has been uprated to deliver 571 PS (420 kW) at 6800 rpm. This is up from 510 PS (380 kW) in its M156 guise in the (more recent) 2011 Mercedes-Benz C 63 AMG Coupé Black Series. Following racing practice, the SLS AMG also has a dry sump lubrication system. Power is delivered to the rear wheels via a seven speed automatic gearbox.
A reasonably slippery 0.36 coefficient of drag and a 2.13 m2 frontal area help the big coupé on to a top speed of 317 km/h, whilst it sprints to 100 km/h from rest in 3.9 seconds. The standing quarter mile is dispatched in just 11.7 seconds, and the SLS AMG hits a terminal velocity of 201 km/h (125 mph) in doing so. Despite the performance ability and large displacement engine, the SLS AMG manages a very respectable 317 g/100km of CO2 emissions, whilst delivering a combined fuel consumption of 13.2 l/100km.
The SLS AMG Coupé - C 197 in Mercedes-Benz model series code - was joined in 2011 by the Mercedes-Benz SLS AMG Roadster, code R 197. The specification remained largely the same, but the convertible layout of this soft-top version left no possibility of keeping the gullwing doors. With the added weight of the necessary chassis stiffening, the SLS AMG Roadster weighed in at an additional 115 kg at the kerb, at 1735 kg.