Mazet won the French Formula Three Championship in 1969 with a Tecno, and moved to Formula Two (F2) with the Sports Motor team alongside Tim Schenken for 1970. It was not a successful move and with sponsorship from Shell Petroleum, Mazet raced Jo Siffert's F2 Chevron when Siffert was unavailable as well as touring cars for Ford Germany. The association with Siffert led to Mazet driving the team's March 701 at Paul Ricard in the 1971 French Grand Prix. This however, was his only attempt at Formula One.