Moser began his career in the early sixties, racing Alfa Romeos and moved to single seaters in 1964,[2] with a good deal of success both in European Formula three and the Temporada Series.

Prior to this he had attempted to qualify for the German Grand Prix in 1966 with a Formula Two Brabham–Cosworth BT16, entered in his own name, but the engine failed in practice.

[2] He continued in 1968 with a Brabham-Repco BT20, in 1969 in a privately entered Brabham BT24 Cosworth,[3] in 1970 with the Bellasi-Cosworth and again for one race in 1971.

After the failure of the Bellasi project[2] Moser returned to Formula Two and drove a Brabham in 1971 and 1972, and a Surtees in 1973, with limited success, but managed second place at Monza in the Lottery GP.

[2] Moser died from severe injuries without regaining consciousness, 31 days after being involved in an accident while driving his Lola T294-BMW in the 1,000 km sports car race at Monza.