The McLaren P1 is a limited-production mid-engine plug-in hybrid sports car produced by British automobile manufacturer McLaren Automotive. Debuted at the 2012 Paris Motor Show,^[5] sales of the P1 began in the United Kingdom in October 2013 and all 375 units were sold out by November.^[6][7] Production ended in early December 2015.^[8] The United States accounted for 34% of the units and Europe for 26%.^[8]

It is considered by the automotive press to be the successor to the McLaren F1, utilising hybrid power and Formula One technology, but does not have the same three-seat layout. It was later confirmed that the Speedtail served as the actual successor to the McLaren F1. The P1 has a mid-engine, rear wheel drive design that used a carbon fibre monocoque and roof structure safety cage concept called MonoCage, which is a development of the MonoCell first used in the MP4-12C and then in subsequent models. Its main competitors are the LaFerrari and the 918 Spyder. They are all similar in specifications and performance, and in a race around Silverstone circuit they were all within half a second of each other, the P1 finishing first at 58.24 seconds and the LaFerrari finishing last at 58.58 seconds; the 918 was in-between with 58.46 seconds.^[9]}}

Parts of the car were inspired by a sailfish that Frank Stephenson saw when on holiday in Miami.^[10]

58 units of the track-oriented P1 GTR^[11] and 5 units of its road legal counterpart, the P1 LM were produced after the initial run of 375 cars.

13 experimental Prototype 'XP', 5 Validation Prototypes 'VP'^[12] and 3 Pre-Production 'PP' cars were produced by McLaren before the production of the P1 started,^[13] a number of which have been refurbished, modified and sold to customers.^[14]