Editing Auto racing (section)

===One-make racing===
{{See also|One-Design|Spec racing}}

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 various countries and regions, some of which&nbsp;– such as the [[Porsche Supercup]] and, previously, [[International Race of Champions|IROC]]&nbsp;– have fostered many distinct national championships. Single marque series are often found at the club level, to which the production-based cars, limited modifications, and close parity in performance are very well suited. Some of the better-known single-make series are the Mini 7 Championship (Europe's longest-running one-make championship), the [[Radical European Masters]], John Cooper Mini Challenge, [[Renault Clio Cup|Clio Cup]], [[Ginetta Cars|Ginettas]], [[Caterham Racing|Caterhams]], [[Kumho BMW Championship|BMWs]], and [[MaX5 Racing Championship|MX5s]]. There are also single-chassis [[open-wheel car|single seater]] formulae, such as [[Formula Renault]] and [[Formula BMW]], usually as "feeder" series for "senior" race formula (in the fashion of [[farm team]]s).