This article is about the sports car classification. For the media group, see CN Group. For the Canadian corporate group, see Canadian National. For the algebra group, see CN-group. For the cyano-group, see cyanide.
Group CN is a category of vehicles used in motorsport, introduced by the FIA in 1993 for sports car racing.[citation needed] Group CN cars are mainly used in hillclimbing championships or sports racing series. Group CM is a non-FIA class which is closely related to Group CN.
