In relation to motorsport governed by theFédération Internationale de l'Automobile,Group R refers to a set of regulations providing production-derived vehicles forrally competition. The Group R regulations were gradually introduced from 2008 as a replacement forGroup A andGroup N rally cars.^[1][2]

To comply with Group R regulations, a car must first be homologated in Group A (or in some cases Group N) and receive one or more VR extensions. Each VR extension is a set of homologated parts and modifications, designed and sold (as a kit or as a complete car) by the manufacturer.

As part of its structure, the Group R regulations have a provision forGT cars, known asR-GT.^[3][4][5]

Group R consists of six classes, designated R1, R2, R3, R4, R5 and R-GT; some of these groups contain their own sub-groups, with cars allocated to each group based on their weight, engine size and powertrain.

The first batch of rules, which were introduced in 2008, featured the R1, R2 and R3 classes. These were restricted to two-wheel drive cars with atmospheric engines up to 2000cc. Supercharged engines were allowed only in R3T (petrol) and R3D (diesel) sub-classes. Since 2015 the R1, R2 and R3 classes allow supercharged engines with a 1.5 equivalency factor for displacement.

Additional regulations were issued in 2011 which covered the R4 and R-GT classes; the R4 was conceived as an evolutionary step for previously-homologated Group N4 cars, turbocharged, all-wheel drive cars based on production models. The R4 class is for cars competing underGroup N regulations for production cars prior to2013. No new models would be homologated under R4 regulations, with the FIA taking the long-term view that these would be replaced by bespoke kit cars. The R4 Kit cars have a standard engine, four-wheel drive powertrain and suspension. In January 2017, French racecar manufacturerOreca was selected as supplier.^[6]

R-GT was introduced to allowGrand Touring cars that competed insports car racing to enter rallies. The R5 class was designed to replaceSuper 2000 cars, and its regulations were introduced in 2013. Prior to 2014, there was no specific championship for cars entered under R-GT regulations, and R-GT cars were ineligible to score points in any existing championship outside theWorld Rally Championship. The FIA R-GT Cup for R-GT cars started in 2015, sharing some events from theWRC andERC events.^[7]

The World Rally Championship has historically had specific support championships that each class has been eligible for.^[8] Cars classified as R1, R2 and R3 contested theWRC3 Championship for two-wheel drive cars between 2013 and 2018; specially-prepared R3T, later R2B cars, were also used in theJunior WRC. Cars classified as R5 compete inWRC2; and WRC3 in 2020 and 2021, whilst regional championships may allow R5 alongside existingSuper 2000 andGroup N Production Cars. Cars classified as R-GT competed in theR-GT Cup until it ceased at the end of the 2022 competition.

The following models have beenhomologated by the FIA under Group R regulations:^[13]

Manufacturer	Model	Image
Citroën	Citroën DS3
Ford	Ford Fiesta Mk 6
Renault	Renault Twingo II
Suzuki	Suzuki Baleno
	Suzuki Swift Italian homologation
Toyota	Toyota Vitz
	Toyota Yaris

Manufacturer	Model	Image
Citroën	Citroën C2
Ford	Ford Fiesta Mk 6
Opel	Opel Adam
Peugeot	Peugeot 208
Renault	Renault Twingo II
Škoda	Škoda Fabia
Suzuki	Suzuki Swift

Manufacturer	Model	Image
Citroën	Citroën DS3 R3T[14]
Fiat	Fiat Abarth 500 R3T
	Fiat Grande Punto R3D
Honda	Honda Civic R3C
Peugeot	Peugeot 207 R3T
Renault	Renault Clio III R3C
	Renault Clio IV R3T[15]
Toyota	Toyota GT86 R3C

Based on Group N

Manufacturer	Model	Image
Mitsubishi	Mitsubishi Lancer Evolution IX
	Mitsubishi Lancer Evolution X
Subaru	Subaru Impreza WRX STI 3rd Gen.
	Subaru WRX STI 4th Gen.

New vehicles under the FIA R4 Kit project in partnership withOreca:^[16][17]

Model	Developer	Image	FIA Registered[18]
Audi A1 SSM R4	Signed Streets Motorsport[19]
Dacia Sandero R4[20]	(digital concept by Oreca)[20]
Fiat 500X R4	(digital concept by Oreca)[21]
Ford Fiesta R4	Offered by Rally Technic[22]
Hyundai i20 R4	Rally Technic[22]	[23]
Lada Kalina R4	(digital concept by Oreca)[24]
Mazda 2 R4	Rally Technic[22]	[25]
Mini One F56 Rally2-Kit[26][18]
Nissan Micra R4	(digital concept by Dytko Sport)[27]
Škoda Fabia R4	Proracing Engineering[28][18]
Suzuki Swift R4LLY S[29][18]	R-Technology[30]
Toyota Etios R4	Rally Technic[22]	[31]
Toyota Yaris R4	Evolve Motorsport[32] Victor Cartier[33] Offered by Rally Technic[22]
Volkswagen Polo R4	Offered by Rally Technic[22]

Cars approved for competition inWRC2 and other R5 based championships:

Manufacturer	Car	Debut	Image
Citroën	Citroën DS3 R5	2012
	Citroën C3 R5	2018
Ford	Ford Fiesta R5	2013
Hyundai	Hyundai i20 R5	2018
Peugeot	Peugeot 208 T16 R5	2014
Proton	Proton Iriz R5[34]	2017
Škoda	Škoda Fabia R5	2015
Volkswagen	Volkswagen Polo GTI R5	2018

Cars that are homologated with national ASNs may compete at national level, or with FIA approval may compete in FIA Regional Championships (European Rally Trophy,African Rally Championship,Asia-Pacific Rally Championship,Codasur South American Rally Championship andNACAM Rally Championship), as per Article 12.3 of the FIA Regional Rally Sporting Regulations:^[35]

Manufacturer	Car	Debut	Image
Mitsubishi	Mitsubishi Mirage R5[36]	2014
Opel	Opel Corsa R5[37]	2017
Toyota	Toyota Etios R5[38]	2016

Manufacturer	Car	Image
Abarth	Abarth 124 Spider
Alpine	Alpine A110 Rally
Aston Martin	Aston Martin Vantage V8 R-GT
Lotus	Lotus Exige R-GT
Porsche	Porsche 911 GT3
	Porsche Cayman GT4 (Typ 981c)

• Rally cars
• Fédération Internationale de l'Automobile
• Rally groups

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