Starting in 2013, a new category of rally cars known as Group R were introduced as a replacement to the Group A and Group N rally categories, with cars classified under one of six categories based on their engine capacity and type, wheelbase, and drivetrain. As a result, no cars will be homologated under Group A and Group N regulations and instead will be reclassified under Group R. Parallel to this, the Super 2000 and Production Car World Championships were restructured; Super 2000 and Group N cars were merged into a single championship known as World Rally Championship-2 alongside R4 and R5 cars, whilst the Production Car World Championship was completely reimagined as the World Rally Championship-3 for two-wheel drive cars complying with R1, R2 and R3 regulations. In 2020 the support championships were further modified with both WRC-2 and WRC-3 accepting entries from R5 cars only. The WRC-2 being open to professional crews, whilst the WRC-3 being open to privateers.