The Cléon-Fonte engine is a family of inline four-cylinder automobile engines developed and manufactured by Renault. It has also been called the Sierra engine, the C-engine, or the C-Type. It has been in continuous production by Renault or a licensee from 1962 to 2004. After about three decades of use in Renault's compact models, it was gradually replaced by the E-type engine from the late 1980s onward.

The Renault Twingo is a city car made by the French company Renault since 1992 across three generations. The name is a portmanteau of twist, swing, and tango.