Group E features very few technical regulations. For safety regulations the articles refer to the category (I, II or III) the car is comparable with.
Group E features four different subclasses:
Many cars fall within the rules of Group E. Examples are the Tatuus N.T07 (SS) and the Renault Mégane Trophy (SH).
International Sporting Code (PDF). Fédération Internationale de l'automobile. 1990. p. 121. http://www.fia.com/sites/default/files/regulation/file/Appendix%20J%201990%20%28Art.251-256%29.pdf ↩
Appendix J - Art. 251 (PDF). Fédération Internationale de l'Automobile. 2013. p. 1. http://www.fia.com/sites/default/files/regulation/file/251%20%282013%29.pdf ↩