Maserati participated in Formula One motor racing during the 1940s, 1950s and 1960s. Its Formula One program was broadly successful, providing a total of 9 Grand Prix wins for the factory team and a world title for Juan Manuel Fangio. Maserati designed three Formula One cars: the Maserati 4CLT, the Maserati A6GCM and the Maserati 250F, and the pre-WWII Maserati 4CL was also used with some success. However due to financial difficulties in the late 1950s the team had to withdraw from Formula One in 1958 despite the 250F still being successful. Privateers continued to use the 250F until 1960, the last year F1 allowed front-engine race cars. In the 1960s, Maserati supplied engines to British Formula One team Cooper. The most successful car of that collaboration was the Cooper-Maserati T81, which had a Maserati V12