The Simca 1307 is a large family car produced by Chrysler Europe and subsequently PSA Peugeot Citroën from 1975 to 1986. Codenamed 'C6' in development, the car was styled in the United Kingdom by Roy Axe and his team at Whitley, and the car was engineered by Simca at Poissy in France.

The Simca Poissy engine, commonly known as the Simca 1100 engine, was a four-cylinder Overhead valve engine developed by Simca for use in its superminis and economy cars, designed by the engineer Georges Martin. In spite of its common name, the engine actually predates the Simca 1100 model, and debuted in 1961 in the Simca 1000. It was developed and produced by Simca in the late 1960s at the manufacturer's factory in Poissy, hence its name.