Chasseuil began his career in the early 1960s in the French Rally Championship, first with co-driver Jean Todt, then Christian Baron.

In 1968 he made his debut at the 24 Hours of Le Mans, and one year later won the 24-hour race at Spa-Francorchamps with his longtime teammate Claude Ballot-Léna.

In 1970, he partnered with Ove Andersson and Björn Waldegård at the Marathon de la Route at the Nürburgring, where the trio placed third overall.

The two gradually moved up the field, finishing second to the Gulf GR8 of Jacky Ickx and Derek Bell because they ran out of time.

The modified twelve-year old design was not competitive, and retired after only 82 laps having damaged an oil line during an off-course excursion.