 After the arrival of the Renault R19 and Clio in the early 1990s, this engine (which however has adapted very well to changing emission standards, with injection and catalytic converters) lived its last days alongside its replacement, the "Energy" engine.When the Renault 14 was released in 1976, it was thought that the Cléon-Fonte engine would disappear since the 14 was equipped with the "X engine" of the Society Française de Mécanique common to Peugeot and Renault.This collaboration with the main competitor at the time was badly perceived by customers and the Renault service network.