Produced during the years 1948-1953, the Ferrari 166S was a sports car. A year later, six of the cars called Ferrari 166MM rolled out of the factory to participate in competitive racing. The body which was constructed out of aluminium was entrusted to Felice Anderloni of coachbuilder Superleggera. 

A Ferrari 166MM participated at the 17th edition of Le Mans racing held on 25-26 June, 1949. Driving for Peter Mitchell-Thompson, drivers Luigi Chinetti and 2nd Baron Selsdon who won the race after driving for 22.5 hours.