Group GT3

Group GT3, known technically as Cup Grand Touring Cars[1] and commonly referred to as simply GT3, is a set of regulations maintained by the Fédération Internationale de l'Automobile (FIA) for grand tourer racing cars designed for use in various auto racing series throughout the world.

Apart from that, Group GT3 allows for a wide variety of car types to be homologated with almost no limit on engine sizes and configurations or chassis construction or layout.

GT3 was envisioned as a category that would simplify the process by combining several existing cars from one-make series, such as the Porsche Supercup or Ferrari Challenge, as well as other race cars available from manufacturers that did not fit in GT1 or GT2, such as the Aston Martin DBRS9 or Dodge Viper Competition Coupe, and allow them to all compete on a level playing field through strict control of their performance by the FIA.

This would allow drivers a bridge between smaller national series and the professional international FIA GT Championship.

On 9 March 2018, it was announced that the FIA World Motor Sport Council approved the introduction of a new process, in which a minimum production number required for GT3 race cars would be enforced.

[7] Following dwindling manufacturer support for their Class One regulations, the Deutsche Tourenwagen Masters (DTM) series switched to the GT3 formula in 2021, abandoning its touring car origins.

Other vehicles have been allowed to run alongside Group GT3 cars in various series under homologations from national ruling bodies, including the Mosler MT900R GT3, Ginetta G55 GT3, Chevron GR8 GT3, Radical RXC GT3, Scuderia Cameron Glickenhaus SCG 003C, Emil Frey Jaguar XKR G3, Acura TLX-GT, Renault Sport R.S.