The Formula Le Mans car is built by French manufacturer Oreca and known as the FLM09. The chassis is based on Courage's LC75 LMP2 chassis, while the car's carbon fiber and kevlar bodywork is a simplified version of the LC75's design. All FLM09s use a production-based General Motors small block LS3 V8 which produces approximately 430 horsepower (440 PS). Transmissions are supplied by Xtrac and feature a six-speed sequential transmission operated by paddle shifters. Engine management is regulated by Magneti Marelli. Up to 2012, all FLM09 cars ran on Michelin slick tires based on their LMP tires but in March 2013, it was announced that Continental AG would be the tire supplier for the LMP Challenge class in the upcoming American Le Mans Series season owing to Continental's deal with NASCAR as sole tire supplier for their sportscar arm. Reinforced carbon-carbon disc brakes are supplied by Brembo.

In order to accommodate endurance races in 2010, Oreca also offers an endurance upgrade for the FLM09 which adds an air restrictor to the engine to increase reliability as well as slowing the car in comparison to LMP2 category car