He began racing with Fiat, winning the Italian GT championship in 1961, and was eliminated from his only Monte Carlo Rally as the result of an accident.
Fiorio then began to push Lancia to develop the new Stratos and managed to get a supply of Dino engines from Ferrari.
[2] In 1984, Fiorio was appointed head of the sporting activities of Fiat, and got a place on the board of directors of Juventus FC in 1988.
In 1989, he debuted as sporting director of Ferrari, with the hard task of making the team competitive again after some disappointing seasons in the mid-1980s.
At the end of 1998, he joined Minardi as sporting director and he remained there until the middle of 2000 when he resigned after a disagreement with team owner Gabriele Rumi.
[2] Fiorio owns Camarda Farm which is located between Ostuni and Ceglie Messapica's old town centres in the province of Brindisi.
[7][8] The movie Race for Glory: Audi vs. Lancia is based on his life, with actor Riccardo Scamarcio as Fiorio.