Group C

Group C was a category of sports car racing introduced by the FIA in 1982 and continuing until 1993, with Group A for touring cars and Group B for GTs. It was designed to replace both Group 5 special production cars (closed top touring prototypes like Porsche 935) and Group 6 two-seat racing cars (open-top sportscar prototypes like Porsche 936). Group C was used in the FIA's World Endurance Championship (1982–1985), World Sports-Prototype Championship (1986–1990), World Sportscar Championship (1991–1992) and in the European Endurance Championship (1983 only). It was also used for other sports car racing series around the globe (All Japan Sports Prototype Championship, Supercup, Interserie). The final year for the class came in 1993, thereafter being replaced by Group GT1. Broadly similar rules were used in the North American IMSA Grand Touring Prototype series (GTP).