Group B was a set of regulations for grand touring (GT) vehicles used in sports car racing and rallying introduced in 1982 by the Fédération Internationale de l'Automobile (FIA). Although permitted to enter a GT class of the World Sportscar Championship alongside the more popular racing prototypes of Group C, Group B are commonly associated with the international rallying scene during 1982 to 1986 in popular culture, when they were the highest class used across rallying, including the World Rally Championship, regional and national championships. The Group B regulations fostered some of the fastest, most powerful, and most sophisticated rally cars ever built and their era is commonly referred to as the golden era of rallying. However, a series of major accidents, some fatal, were blamed on their outright speed with lack of crowd control at events. After the death of Henri Toivonen and his co-driver Sergio Cresto in the 1986 Tour de Corse, the FIA banned the group from competing in the WRC from the following season, dropped its prior plans to introduce Group S, and designated Group A as the top-line formula with engine limits of 2000 cc and 300 bhp. In the following years, ex-rally Group B cars found a niche in the European Rallycross Championship until being dropped in 1993. By 1991 the World Sportscar Championship had moved on from Group B and C, with the GT championships formed in the nineties preferring other classes such as the new Group GT. The last cars were homologated in Group B in 1993, though the FIA made provisions for national championships and domestic racing until as late as 2011. Overview New FISA groups In 1982 the FISA restructured the production car category of Appendix J to consist of three new groups. The outgoing Group 1 and Group 2 were replaced with Group N and Group A for unmodified and modified production touring cars respectively. These cars had to have four seats (although the minimum size of the rear seats was small enough that some 2+2 cars could qualify) and be produced in large numbers. Their homologation requirement was 5000 units in a 12 month period between 1982 and 1992. From 1993 the requirement reduced to 2500 units. Group B was for grand touring (GT) cars with a minimum two seats, redefined as sports grand touring cars in 1986. It combined and replaced Group 3 and Group 4, two