The McLaren P1 is a limited-production plug-in hybrid sports car produced by British automobile manufacturer McLaren Automotive. Debuted at the 2012 Paris Motor Show.
The P1 features a 3.8 L; 231.8 cu in (3,799 cc) twin-turbocharged V8 engine. The twin turbos boost the petrol engine at 1.4 bar (20.3 psi) to deliver 737 PS (542 kW; 727 hp) at 7,500 rpm and 531 lb⋅ft (720 N⋅m) of torque at 4,000 rpm, combined with an in-house-developed electric motor producing 179 PS (132 kW; 177 hp) and 192 lb⋅ft (260 N⋅m) of torque. The electric motor and the petrol engine in the P1, produce a combined power output of 916 PS (674 kW; 903 hp) and 723 lb⋅ft (980 N⋅m) of torque. The electric motor can be deployed manually by the driver or left in automatic mode, whereby the car's ECUs 'torque fill' the gaps in the petrol engine's output, which is considered turbo lag. This gives the powertrain an effective powerband of almost 7,000 rpm.The car has rear-wheel-drive layout and is equipped with a 7-speed dual-clutch transmission developed by Graziano Trasmissioni.