The Mercedes V6 Hybrid Formula One engine, is a series of 1.6-liter, hybrid turbocharged V6 racing engines which features both a kinetic energy recovery system (MGU-K) and a heat energy recovery system (MGU-H), developed and produced by Mercedes-AMG High Performance Powertrains for use in Formula One. The engines were in use since the 2014 season by the Mercedes works team. Over years of development, engine power was increased from 840 horsepower at 15,000 rpm, to 1,070 horsepower at 15,000 rpm. Customer team engines were used by Williams, McLaren, Lotus, Manor Racing, Force India, Racing Point Force India, Racing Point and Aston Martin.