A FIA Group is a category of car allowed to compete in auto racing. The FIA Appendix J to the international motor sports code defines the various Groups. While a given racing car may fit into a FIA Group, local rules still may either prohibit the car, or allow additional modifications that aren't part of the FIA Group specifications. See also Group A Group B Group C Group N Group R Group S Group 1 (racing) Group 2 (racing) Group 3 (racing) Group 4 (racing) Group 5 (racing) Group 6 (racing) Group 7 (racing) Fédération Internationale de l'Automobile