Both IPAS and DRS have their dedicated switches on the steering wheel. The P1 uses Formula One-derived features like Instant Power Assist System (IPAS), which gives an instant acceleration boost via the electric motor, a Drag Reduction System (DRS), which operates the car's rear wing, and a KERS. The resulting power-to-weight ratio is a minimum of 584 hp per tonne (3.41 lb/1.54 kg per hp) and a maximum of 647 hp per tonne (3.78 lb/1.54 kg per hp). The car has a dry weight of 3075 lb (1395 kg) and a curb weight of 3411 lb (1547 kg), putting the average weight as 3243 lb (1471 kg). The P1 can operate under the petrol engine, electric motor, or hybrid mode (both petrol engine and electric motor activated at once).

Charging the battery is possible through the engine or plug-in equipment and can finish in up to two hours. Power for the electric motor is stored in a 324-cell lithium-ion high-density battery pack located behind the passenger cabin, developed by Johnson Matthey Battery Systems. Power is delivered to the rear wheels via a seven-speed McLaren SSG dual-clutch automatic transmission. The electric motor is manually deployable or can be left in automatic mode, whereby the car's electronic control units 'torque fill' the gaps in the V8's output, which is considered turbo lag, giving the powertrain an effective powerband of almost 7,000 rpm.

m), which gives the car a total output of 903 hp (673 kW) and 723 ft.

The first hybrid hypercar, the P1 contains an in-house-developed McLaren ECU electric motor producing 176 hp (131 kW) and 192 ft

The twin turbos boost the petrol engine at 1.4 bar (20.3 psi) to deliver 727 hp (542 kW) at 7,500 rpm and 531 ft The P1 uses a 3.8L (3,799 cc) twin-turbocharged V8 engine called M838TQ. Unlike most other McLaren cars, the P1's name is officially stylized as McLaren P1™, with a trademark symbol.

The production version sports LTR ducts in front of each of the front wheels to optimize downforce. Unveiled as a concept car in 2012, the McLaren P1's production form, which unusually looks almost exactly the same as the concept form, was unveiled at the 2013 Geneva Motor Show. The McLaren P1 is the long-awaited successor to the McLaren F1 supercar.

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