In June 2010, Grosjean made his debut in the famous Le Mans 24 Hours endurance race, sharing a Ford GT1 with Mutsch and Jonathan Hirschi.
En xuño de 2010, Grosjean fixo o seu debut na famosa carreira de resistencia das 24 Horas de Le Mans de 2010, compartía un Ford GT1 con Mutsch e Jonathan Hirschi.