Born in Lodi to a family of means, he acquired a Ferrari at the age of twenty and began racing sports cars. Signed by Scuderia Ferrari, Castellotti participated in 14 grands prix, debuting on January 16, 1955. He secured 1 pole positions, achieved 3 podiums, and scored a total of 19.5 championship points.
Eugenio Castellotti was famous for his suave manner and finely tailored clothes, gaining much publicity for his relationship with ballerina and actress, Delia Scala.
He was killed in 1957 while attempting a speed record at the Modena Auto drome in Modena.
A country gentleman from the town of Lodi, not far from Milan, Castellotti bought a Ferrari sportscar in 1950 when he was still only 20 years of age and he campaigned it enthusiastically in Italian events in 1951 and 1952.
Castellotti thus became a Ferrari driver but there were too many drivers on the books and so Eugenio concentrated on on sports cars, winning the Mille Miglia and the Sebring 12 Hours.
In F1 the high point of his year was second place to Peter Collins in the French Grand Prix at Reims, while he spun out of the race at Monza with tyre failure after an indisciplined battle with team-mate Luigi Musso.