The Maserati 450S made its debut In Buenos Aires, Argentina, but drivers Stirling Moss and Juan Manual Fanio could not finish the race due to problems with the 450S's transaxle. This would be followed by success at Sebring, where the 450S would successfully beat the Ferrari 315S and Jaguar Type-D. Although it was the same car racing in name at LeMans, a new body was attached to the 450S in the hopes of providing less drag. The result was a disaster as the car actually lost speed and caused the engine to overheat. Moss and Fangio once again had to resign due to problems with the car's transaxle.
The 450S was considered ahead of its time. In many races, it was far superior to its competitors but the rush to produce the car led to repeated mechanical failures. Shortly thereafter a three liter limit on engine sizes in competitive races led to the end of the 450S in European racing. However, the 450S would find victory in the SCCA sports car series on more than one occasion.
The 450 S made its first race appearance at the 1957 Argentinean 1000 KM race, driven by Juan Manuel Fangio and Stirling Moss. For half of the race there was no one who could keep up with the 450S. Then clutch began to fail and finally the transmission seized, ending the superb effort.
The next race was at Sebring and Fangio would team up with Jean Behra to drive a brand new Maserati 450S. It was a winning combination, as the Fangio/Behra Maserati took the lead on lap 20 and never relinquished it. They would finish with a commanding two lap lead over the next car, a Maserati 300s. Fangio and Behra's victory was the most dominating in Sebring's short history and Fangio became the first driver to win Sebring back-to -back.Also photographed at :