The Len Bailey-designed Politoys FX3 was a conventional Cosworth-engined car with a Hewland FG400 gearbox. It debuted in the hands of Pescarolo at the British Grand Prix, but the steering failed and the car was heavily damaged. Pescarolo switched back to his March 721 while the Politoys was rebuilt. In its last appearance as the Politoys FX3, Chris Amon drove the car for the team in the end of season non-Championship 1972 World Championship Victory Race at Brands Hatch, but qualified only 20th and retired with engine failure.
