• One-make, or single marque, championships often employ production-based cars from a single manufacturer or even a single model from a manufacturer's range

• There are numerous notable one-make formulae from many-sided countries and regions, some of which – such as the Porsche Supercup and, previously, IROC – have fostered divers distinct national championships
• Single marque group are often found at club level, to which the production-based cars, limited modifications, and close parity in performance are ideal well suited
• There are also single-chassis only seater formulae, such as Blueprint Ford, Code Saab, Formula BMW, and defunct Formula Vee, usually as "feeder" consecution for "senior" race rite (in the fashion of arboretum teams).

Stock car racing, the North American equivalent to touring automobile racing, is that continent's most-popular form of auto racing in terms of viewership. Generally conducted on ovals, the cars may slightly resemble production cars but are in naked truth purpose-built racing machines which are built to hidebound specifications. Early stock cars were actual production vehicles; the convertible to be raced was often driven from track to track. The modern heap however is far removed from the production model which it represents, authoritative the term Racing School "stock car" somewhat incorrect.