Mercedes-Benz SLR McLaren

Manufacturer	McLaren Automotive
Production	2003–2010
Assembly	Woking, Surrey, England, UK
Successor	Mercedes-Benz SLS AMG
Class	Grand tourer
Body style	2-door coupé 2-door roadster
Layout	Front mid-engine, rear-wheel drive
Engine	5.4 L supercharged V8 (M115 ML55)
Transmission	5-speed automatic
Wheelbase	2,700 mm (110 in)
Length	4,656 mm (183.3 in)
Width	1,908.5 mm (75.14 in)
Height	1,261 mm (49.6 in) 2006–08: 1,252 mm (49.3 in)
Curb weight	1,768 kg (3,900 lb)

Engine

The SLR McLaren sports a hand-built 5.4-litre, supercharged V8 engine

The SLR sports a 232 kg (510 lb) hand-built 5,439 cc (5.439 L; 331.9 cu in), supercharged, all-aluminium, SOHC V8 engine. The cylinders are angled at 90 degrees with three valves per cylinder and lubricated via a dry sump system. The compression ratio is 8.8:1 and the bore and stroke is 97 millimetre (3.82 in) and 92 millimeters (3.62 in), respectively. The Lysholm-type twin-screw supercharger rotates at 23000 revolutions per minute and produces 0.9 bar (13 psi) of boost. The compressed air is then cooled via two intercoolers. The engine generates a maximum power of 626 PS (460 kW; 617 hp)@6500rpm and maximum torque of 780 N·m (580 lb·ft)@3250-5000rpm.^[5]

Unlike most of its contemporaries, its engine is front-mid mounted. McLaren took the original concept car designed by Mercedes and moved the engine 1 metre (39.4 in) behind the front bumper, and around 50 centimetres (19.7 in) behind the front axle. They also optimized the design of the center firewall.