The MG-Lola EX257 is a Le Mans Prototype racing car built by Lola for the MG car company for their attempt to compete again at the 24 Hours of Le Mans in 2001. The car has had many years of mixed success since its introduction, even in privateer hands.

A Le Mans Prototype (LMP) is a type of sports prototype race car used in various races and championships, including the 24 Hours of Le Mans, FIA World Endurance Championship, IMSA SportsCar Championship, European Le Mans Series and Asian Le Mans Series. Le Mans Prototypes were created by the Automobile Club de l'Ouest (ACO). The technical requirements for an LMP include bodywork covering all mechanical elements of the car. As of 2023, there are two classes within Le Mans Prototypes, designated LMP2 and LMP3.