He started driving with McLaren in 1980. From 1981 until 1983, he was racing for Renault F1. Prost returned to McLaren in 1984 and raced for them until 1989. During this time he won his first three championships. Prost left McLaren to race for Scuderia Ferrari in 1990 and 1991. In 1992, Prost took a year off from racing. He returned to racing in 1993 with WilliamsF1. Prost retired from racing after winning his fourth title in that year.