Group B

In relation to motorsport governed by the FIA, Group A and Group B referred to two sets of regulations for competition vehicles in touring car and rally racing. Group B was introduced by the FIA in 1982 as replacement for both Group 4 (modified grand touring) and Group 5 (touring prototypes) cars.

Related Topics:
Motorsport - FIA - Group A - Touring car - Rally racing - Group 4 - Group 5

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Group A referred to production-derived vehicles limited in terms of power, weight, allowed technology and overall cost. Group A was aimed at ensuring a large number of privately-owned entries in races.

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By contrast, Group B had few restrictions on technology, design and the number of cars required for homologation to compete. Weight was unrestricted, high-tech materials were permitted, and there was no limit on power. The category was aimed at car manufacturers by promising outright race victories and the subsequent publicity opportunities without the need for an existing production model.

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Group B was initially a very successful concept, with many manufacturers joining the premier World Rally Championship, and increased spectator numbers. But the cost of competing quickly rose, and the performance of the cars proved too much, resulting in a series of fatal crashes. As a consequence Group B was cancelled at the end of 1986 and Group A regulations became the standard for all cars until the advent of World Rally Cars in 1997.

Related Topics:
World Rally Championship - World Rally Car

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In the following years Group B found a niche in the European Rallycross Championship, with cars such as the MG Metro 6R4 and the Ford RS200 competing as late as 1992. For 1993, the FIA replaced the Group B models with prototypes that had to be based on existing Group A cars, but still followed the spirit of Group B, with low weight, 4WD, high turbo boost pressure and staggering amounts of power.

Related Topics:
Rallycross - MG Metro 6R4 - Ford RS200

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