The Fiat 131 was introduced to replace the Fiat 124 in 1974 and was given overhead valve engines of 1297cc or 1585cc. Body styles were a 4-door saloon or a 5-door estate Familiare which was actually built by SEAT in Spain and rebadged. In 1976 Bertone designed the 2-door Fiat 131 Abarth Rallye with 1995cc dohc engine, a car that won the WRC in 1977, 1978 and 1980. The Mirafiori was revised in 1978 gaining square headlamps and large taillights. A new option of 1301cc and 1585cc dohc engines for the Series 2 models which were klnown as SuperMirafiori. The Series III Mirafiori was announced in 1981 and included a suercharged 'Volumetrico Abarth' version, and in 1983 production ceased although the estate continued until 1985.