The Simca Poissy engine, commonly known as the Simca 1100 engine, was a four-cylinder OHV engine developed by Simca for use in its superminis and economy cars, designed by the engineer Georges Martin (V12 Matra Sports engine designer). In spite of its common name, the engine actually predates the Simca 1100 model, and debuted in 1961 in the Simca 1000 Coupé. It was developed and produced by Simca (subsequently rebranded as Talbot) in the late 1960s at the manufacturer's factory in Poissy, hence its name. Peugeot eventually dropped the engines, replacing them with their own TU family.