Group C series[edit]

The FIA's Group C formula was designed primarily for the World Endurance Championship which included the 24 Hours of Le Mans. However, several smaller series also adapted the Group C regulations. The Deutsche Rennsport Meisterschaft allowed Group C cars to compete alongside various other types of cars from the 1982 season until 1985, when the series was reformed as the ADAC Supercup. Under the new Supercup series, only Group C cars would be allowed to compete. This series lasted until 1989.


In Great Britain, the Thundersports championship combined a variety of cars with the C Junior (later C2) class of cars. This too was later replaced with a C2 only series known as the BRDC C2 Championship, and lasted until 1990. The European Interserie championship also allowed Group C cars to compete, although they did not use the same class structure.


In Japan, the All Japan Sports Prototype Championship was created in 1983, while the Fuji Long Distance Series also began allowing Group C cars for the first time. It was not until 1989 however that the series concentrated solely on the Group C formula. Both championships lasted until 1992, when they were cancelled along with the World Sportscar Championship.