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, sales of the P1 began in the United Kingdom in October 2013 and all 375 units were sold out by November. Production ended in early December 2015. 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.