Mario Andretti is the most successful Formula One driver to drive as an American, but he did not leave his native Italy until the age of 15. He raced in IndyCars from 1964 and, from 1968, spent time commuting to Europe to make appearances in Formula One races. Between his debut with Lotus at the 1968 Italian Grand Prix and the end of the 1974 season Andretti started 21 of the 84 races, driving for four teams. His first race with Ferrari brought about his first win – the 1971 South African Grand Prix. Andretti eventually decided to sign up as a full-time driver with Parnelli in 1975, but after a little over two seasons and no real success the team withdrew from Formula One. He signed with Lotus for the remainder of the season and, by the end of the year, was beginning to achieve some good results including a win at the 1976 Japanese Grand Prix. The car proved fast but unreliable for the following season, and Andretti's four wins took him up to third in the championship. With the problems solved for the following year he was able to win six races and the drivers' title. The decisive victory came at the 1978 Italian Grand Prix, but the race also saw the death of teammate Ronnie Peterson after a crash at the start. Andretti drove for three more seasons, but achieved only one more podium finish and was at best 12th in the championship. He retired from Formula One in 1981 but returned to Ferrari for the final two races of 1982 following an injury to Didier Pironi, some weeks after the death of Ferrari driver Gilles Villeneuve. Out of 128 F1 race starts Andretti finished on the podium 19 times, 12 of which were on the top step.