In the motorsport discipline of rallying, Group Rally4 is a formula of rally car specifications determined by the FIA for use in its international competitions: World Rally Championship (WRC) and regional championships. National rallying competitions also allow Group Rally4 cars to compete. There are two technical subclasses of Group Rally4 however these do not affect competitive eligibility. 'Rally4' may be used alone with the same definition. The group was launched in 2019 after the introduction of the Rally Pyramid initiative to reorganise the classes of car and championships in international rallying was approved in June 2018.
The formula for Group Rally4 cars was taken from R2 class of Group R and tweaked with the defining ruleset interchanging the terms, this meant that any existing R2 car homologated or approved since their introduction in 2008 could continue to be used in Rally4 level competition. However, R2 cars homologated prior to 2019 were not required to have a turbo restrictor fitted and remain exempt. Those of R2B class cars also retain the minimum weight of 1030 kg and must use 6.5"x16" on asphalt rallies.
Group Rally4 cars are defined in FIA document Appendix J - Article 260 as Touring Cars or Large Scale Series Production Cars, supercharged Petrol engine (including rotary engines), 2-wheel drive (front or rear wheel drive)). A production touring car with at least 2500 identical units manufactured must be homologated in Group A, with all the components and changes that make it a Group Rally4 car homologated in an extension. They have a power to weight ratio of 5.1kg/hp.
|Ford||Fiesta Rally4||2019||FIA - A5775
Fiesta ST-Line (Fiesta Mk7)
|Ford||Fiesta R2T||2015||FIA - A5762
Fiesta 1.0 Ecoboost 140 PS (Fiesta Mk7)
|Ford||Fiesta R2||2012||FIA - A5729
Fiesta 1.6 (Fiesta Mk6)
|Opel||Corsa Rally4||2021||FIA - A5781
Opel Corsa GS Line 130
|Opel||Adam R2||2014||FIA - A5752
Adam Slam 3-Door Hatchback
|Peugeot||208 Rally4||2020||FIA - A5780
208 GT Line 130
|Peugeot||208 R2||2012||FIA - A5743
208 VTI 125 3 Portes
|Renault||Clio Rally4||2021||FIA - A5779
Clio R.S. Line TCE 1.3EDC
|Renault||Twingo R2||2010||FIA - A5731
Twingo "Renault Sport"
|Škoda||Fabia R2||2011||FIA - A5737
Fabia 1.6 16v
|Kia||Rio Rally4||2021||FIA - none
Built by CRM Motorsport Approved for use in national championships
|Source: FIA Homologation List 2021|
- "FIA Rally Car Pyramid Brochure February 2021" (PDF).
- "Specific Regulations for Cars in Group Rally5/Rally4/Rally3" (PDF).
- "FIA Regional Rally Sporting Regulations 2021" (PDF).
- "FIESTA RALLY4". M-Sport. Retrieved 2020-12-12.
- "Opel Corsa Rally4 on the Start Line | Media OPEL International". int-media.opel.com. Retrieved 2020-12-12.
- "PEUGEOT 208 Rally 4… Time for action! | Media Peugeot Sport". media.peugeot-sport.com. Retrieved 2020-12-12.
- "Clio Trophy France - Communiqués de presse - Clio Rally4, née pour gagner - renaultsport.com". Renault Sport (in French). Retrieved 2021-01-18.
- Shacki. "eWRC-results.com - rally database". eWRC-results.com. Retrieved 2022-10-06.
- "Kia Rio Rally4 regessa no Rally Vidreiro: "continuar a evoluir o carro" | AutoSport". www.autosport.pt. Retrieved 2022-10-06.
- "FIA Homologation List 2021" (PDF).