In relation to motorsport, Group T5 is a set of technical specifications for prototype cross-country trucks used in off-road Cross-Country Rallying (also called Rally Raid).
The group is governed by the Fédération Internationale de l'Automobile (FIA) and defined in appendix J, article 287 of its International Sporting Code.
[2] Trucks eligible for Group T5 must comply with a fixed set of rules according to Appendix J, article 287.
Because of safety regulations, the cabs have a very strong homologated roll cage.
[1] Within the World Rally Raid Championship, T5 classes may include FIA specification trucks or those permitted by the 2021 ASO Dakar Auto regulations which includes sub groups to Group T5:[3][4]