Motorsport championships similar to or like Formula One

Second-tier single-seater racing championship organised by the Fédération Internationale de l'Automobile . Introduced in 2017, following the rebranding of the long-term Formula One feeder series GP2. Wikipedia

Third-tier international single-seater racing championship and organised by the Fédération Internationale de l'Automobile . The championship launched in 2019 as a feeder series for the FIA Formula 1 World Championship and FIA Formula 2 Championships. Wikipedia

Auto racing world championship organized by the Automobile Club de l'Ouest and sanctioned by the Fédération Internationale de l'Automobile (FIA). First endurance series of world championship status since the demise of the World Sportscar Championship at the end of 1992. Wikipedia

European Formula Three auto racing competition, organised by the Fédération Internationale de l'Automobile . After one season of the FIA Formula 3 International Trophy, the FIA revived the FIA Formula 3 European Championship. Wikipedia

Touring car racing category in Australia, running as an International Series under Fédération Internationale de l'Automobile regulations. All Supercars events take place in all Australian states and the Northern Territory, with the Australian Capital Territory formerly holding the Canberra 400. Wikipedia

International touring car championship promoted by Eurosport Events and sanctioned by the Fédération Internationale de l'Automobile . It has had several different incarnations, including a single season in 1987 as the World Touring Car Championship and most recently a world championship (WTCC) that has run between 2005 and 2017. Wikipedia