Mass placed second to Jean-Pierre Jarier in a Formula Two race at Nivelles, in June 1973. He had finished second in the first heat and third in the second. He completed his first Formula One race at the 1973 German Grand Prix at the Nürburgring. Mass came in seventh in a Surtees. He drove a McLaren-Ford to third place in the 1975 Brazilian Grand Prix at Interlagos.