It was announced in February 2014 as a new model, but based on the existing McLaren MP4-12C with 25% new parts, and was formally unveiled at the 2014 Geneva Motor Show. The 650S shares the MP4-12C's Carbon-fiber-reinforced polymer chassis, and is powered by the same McLaren M838T 3.8-litre V8, twin-turbo engine, but now developing 641 bhp (478 kW; 650 PS) and 500 lb·ft (680 N·m) of torque. Power is transmitted to the...