Formed in 1953 by SIMCA, then a subsidiary of Fiat Auto Italia, Fiat Someca was a French farm tractor manufacturer.
In 1958, Someca became part of Simca Industries.
SAFAF (Société Anonyme Francaise de Fiat Automobiles), the company from which SIMCA was formed, began to import and then manufacture licensed Fiat vehicles with the Nantes plant in 1934 also imported Fiat tractors as well as Steyr tractors to France.
In 1953, SIMCA bought out the agricultural engines and tractors division of the MAP company, which was then used as the basis for the creation of Someca (“Société de MECANIQUE Seine”). Someca went on to produce the very first Someca tractors and spare parts for tractors the last to be produced by MAP.
Someca's first tractor was the DA 50, closely derived from the MAP DR3, which can produce 37 hp. at 1500 rpm. The next model, the "SOM 40", was extremely successful in France. Launched in 1957, it ranks among the largest tractors ever built in France. It was equipped with a Fiat OM COID 45 engine: a four-stroke, direct injection, 4165 cc diesel engine developing 45 hp. at 1500 rpm. By 1964, 18,741 models were produced, a new record for this time!
With the arrival of gasoline engines during the 1950s and 1960s, the same model became available with either a gasoline or diesel engine.
Over 40,000 Someca tractors with a Fiat base engine were manufactured in 1960.
1965, the year in which the "15" series was launched, Someca only manufacture licensed Fiat TRATTORI models. FIAT has always been the main shareholder of Someca and in 1983, merged the company into its agricultural subsidiary FIATAGRI, which became Fiat New Holland in 1993 before becoming Fiat CNH Global as it is now known.