The 312T was tested alongside the 312B3 at Fiorano, proving conclusively that the newer car was faster, and indeed it went on to win its next race, the non-championship International Trophy race, with Lauda at the wheel. In the world championship, after the slow start to the season in which Brabham, Tyrrell and McLaren put up strong competition, Lauda won 4 out of 5 races mid season before snatching the title at Monza by finishing third, whilst Clay Regazzoni's win in that race secured Ferrari its first Constructors' Championship since 1964. Lauda went on to win the US Grand Prix at season's end, confirming Ferrari's superiority in 1975.