The Massey Ferguson 100 series was introduced to be a world wide range to replace the former Massey-Harris and Ferguson tractors many of which were still based on pre-war designs. The basic design was still a development of the Ferguson design. The Model was introduced in the USA first built at MF's Detroit plant. The UK version was built at Coventry and was designed around the Perkins 3-cylinder engine. The design also moved to a 12 speed gearbox.