Sergio Cresto (January 19, 1956 – May 2, 1986) was the American co-driver of Henri Toivonen at the Lancia Martini team for the 1986 World Rally Championship season.
This event happened exactly one year before the accident that claimed the lives of both Sergio Cresto and his driver by then Henri Toivonen on May 2, 1986.
The following year, Cresto again changed drivers and ended the season placing three times at the Italian national level: sixth with Michele Cinotto after the third place finishes at Targa Florio and again at Quattro Regioni in a Lancia 037) tenth with Andrea Zanussi (after finishing second at the San Marino Rally in a Lancia 037).
After a long successful season and a duel with Henri Toivonen and his Porsche, the Italians eventually won the European Championship.
After a strong start to the season, including a win in the Rally Monte Carlo, Toivonen and Cresto were the favourites for the World Championship title.