Castellotti was born in
Lodi, Italy. He acquired a
Ferrari 166 MM s/n 0058M at the age of twenty, from a local benefactor, and began racing
sports cars. but in mid-season the team amalgamated with
Scuderia Ferrari, for whom Castellotti drove for the remainder of his career. He participated in 14 World Championship Grands Prix, achieving 3 podiums and scored a total of 19.5 championship points. He secured
pole position, with Lancia, at the
1955 Belgian Grand Prix, becoming the youngest driver to do so (at age 24 years, seven months and 26 days), a record that stood for 13 years until
Jacky Ickx's pole position at the
1968 German Grand Prix. s/n 0558LM at the
Swedish Grand Prix on 7 August 1955, where he got third place overall. Castellotti also participated in several non-Championship Formula One races. Castellotti won the March 1956
12 Hours of Sebring at
Sebring, Florida partnered with
Fangio. Castellotti's Ferrari achieved a total race time of 2 hours 10 minutes 31.1 seconds, winning the race. He was also second in the
Nürburgring 1000 km race again partnered with Fangio. ==Private life==