The LMP2 class is for prototype cars running production-based engines with a limit of 5L for non-turbo and 3.2L for turbo-charged engines, with a fixed fuel tank capacity of 75L. The class allows for both open and closed-cockpit cars, but both types must have the "dorsal fin" to prevent mid-air rolling, and the rather random regulation still stands that there must be enough space for two people.
This is a cost-capped class where the cost of the car, minus the engine, must cost less than €370,000 ($412,427.90) for the open cars and €450,000 ($501520.50) for closed-cockpit cars.
With 19 cars entered for this class, it promises to be very interesting and exciting to watch. It is noteworthy that the aero performance in the corners is greater than that of GT-specification cars but straight-line speeds are very similar.
LMP3, while not a class that competes in the FIA World Endurance Championship, is a new entry level class using a stock Nissan 5L V8 engine and a closed-cockpit design. These cars run in the European Le Mans Series and the Asian Le Mans Series, although two have been invited to run at the Le Mans test day at the end of May.
The 24 Hours of Le Mans is set to run June 13-14, 2015, at the La Sarthe Circuit in Le Mans, France.