In Formula One motor racing, engine or power unit manufacturers are people or corporate entities which are credited as the make of Formula One engines that have competed or are intended to compete in the FIA Formula One World Championship.
[1] Key: Races Entered = Number of individual races entered; Races Started = Number of individual races started; Wins = Number of races won; Points = Number of World Constructors' Championship points scored; Poles = Number of pole positions; FL = Number of fastest laps; Podiums = Number of podium finishes; WCC = World Constructors' Championships won; WDC = World Drivers' Championships won.
Key: Races Entered = Number of individual races entered; Races Started = Number of individual races started; Wins = Number of races won; Points = Number of Constructors' Championship points scored; Poles = Number of pole positions; FL = Number of fastest laps; Podiums.
= Number of podium finishes; WCC = Constructors' Championships won; WDC = Drivers' Championships won.
Source:[4] Engine manufacturers whose only World Championship participation was in the Indianapolis 500 from 1950 to 1960 when the race was part of the Formula One World Drivers' Championship.