 The 650S shares the MP4-12C's carbon-fibre-reinforced polymer chassis, and is powered by the same 3.8-litre twin-turbocharged McLaren M838T V8 engine, but is now rated at and of torque.Power is transmitted to the wheels through a seven-speed dual-clutch gearbox.The 650S is an evolution of the preceding 12C and uses the findings gained from the P1 in order to make the car more responsive and focused.