fitted with turbocharged racing engines (capacity equivalence factor of 1.4) After two years of small fields and little in the way of manufacturer support the championship was downgraded to become the European Sports Car Championship for 1978 but even that title was to be abandoned after the first year. From 1979 the FIA decreed that Group 6 cars could compete in the World Championship of Makes qualifying rounds but continued to allow only production-based cars to score championship points for their manufacturer. 1981 saw the series expanded with an official Drivers’ title awarded by the FIA for the first time and drivers of Group 6 cars were eligible to compete for this. Group 6 was then effectively replaced by the new Group C Sports Car class for 1982 but the FIA granted a concession which allowed the Group 6 cars to compete in the 1982 World Endurance Championship alongside the new cars. As in 1981, drivers of Group 6 cars were eligible to score points in the Drivers’ championship but the relevant manufacturers could not score points towards the Makes title. For the 1982 World Endurance Championship, the engine capacity maximum for Group 6 cars was set at 3000cc. Throughout the seven years of the second era of Group 6 racing the cars had been eligible to compete in 24 Hours of Le Mans and the category had produced the outright winning car in all years except 1979 & 1982. Groups 1-9 References Racing car classes Fédération Internationale de l'Automobile