The McLaren P1 GTR is a high-performance track-focused variant of the McLaren P1 hypercar. The P1 GTR is powered by a hybrid powertrain that combines a twin-turbocharged 3.8-liter V8 petrol engine with an electric motor. The total combined output of the powertrain is approximately 986 horsepower (or 1,000 PS). This impressive power output enables the McLaren P1 GTR to deliver exceptional performance on the track, making it one of the most powerful and fastest production cars ever built by McLaren.