[1][2] The class uses a balance of performance system to provide close competition between different race cars.
After an unsuccessful attempt to expand the category in 2012, the SRO introduced the GT4 European Trophy, consisting of five rounds from existing European Championships.
[8] The Northern Cup would turn back into the GT4 European series, while the Southern Cup would turn into the FFSA GT Championship.
GT4 cars can either directly be built by the automotive manufacturer, or by race teams and tuning companies.
Additionally, the following series allow SRO GT4 cars to participate alongside other competitors: