What standard engine type is used in Le Mans LMP2 cars?

The standard engine type used in modern Le Mans LMP2 cars is the Gibson V8. Since the 2017 LMP2 regulations, Gibson Technology has been the class’s designated engine supplier, giving every contemporary LMP2 car the same basic powerplant.

The current engine is a naturally aspirated 4.2-litre Gibson V8, commonly identified as the GK428. It produces roughly 600 horsepower in the specification used by the major endurance championships. Standardising the engine helps control costs and keeps competition focused more on chassis setup, reliability, driver combinations and strategy than on an arms race between engine manufacturers.

This is why alternatives such as Cosworth V8, AER V6 and Judd V10 are not the normal answer for current LMP2. Those names are associated with other racing-engine programmes or earlier eras, but they are not the standard modern LMP2 engine at Le Mans. The chassis remains a separate choice, with constructors such as Oreca, Ligier, Dallara and Riley/Multimatic historically eligible.