After making his debut in karts in 1983, he switched to the French Formula 3 championship in 1989 and then Formula 3000 two years later. He drove in Formula 1 for the Larrousse team in 1994 and as a test driver with Williams in 2003 and 2004, before switching to the world of endurance racing in 2005. He took part in the American Le Mans Series in the GT1 class, with six class wins in the Le Mans 24 Hours and many other successes. Beretta is one of the most successful GT drivers of the past 15 years. After eight years with Chevrolet, in 2012 the Monegasque took a drive with Ferrari in GT races at the wheel of a 458 Italia as well as being available for all sporting and commercial activities linked to Prancing Horse owners.
In 2014, he won the European Le Mans Series championship in the GTC class at the wheel of a Ferrari 458 Italia entered by the SMP Racing team, along with Russians Devi Matkozov and Anton Ladygin, winning the race at Paul Ricard. In 2015 Beretta raced in the United States where he was runner up in the Pirelli World Challenge series competing for R.Ferri Motorsport and winning three races in a Ferrari 458 Italia GT3. He was also runner up at the Le Mans 24 Hours alongside James Calado and Davide Rigon in the no. 71 AF Corse Ferrari.
In 2016 he finished second the Asian Le Mans Series in the GT class. In 2017 Beretta raced in the Blancpain Endurance Cup with the AF Corse 488 GT3 and took part to the Le Mans 24 Hours with the Spirit of Race Ferrari. In 2018 he took part in the FIA WEC Super Season driving the 488 GTE of MR Racing alongside Motoaki Ishikawa and Eddie Cheever III. In 2019, Beretta continued his programme in the FIA WEC with MR Racing, just like 2020.
The Monegasque is a tutor for customers in the Prancing Horse’s non-competitive activities.
With no competitive commitments, Olivier Beretta still didn’t stray far from the world’s most prestigious circuits. At the service of customers of the Prancing Horse's most exclusive programmes, the Monégasque often performed spectacular exhibitions at the wheel of Formula 1 single-seaters. One was at Daytona during the Ferrari Racing Days.
In 2023 the driver from Monaco did not take part in any races, but offered his track experience to clients during events organised on the most prestigious circuits in the world, as part of F1 Clienti and the XX Programme. During the Finali Mondiali Ferrari at Mugello, he also participated in the international presentation of the 499P Modificata, the car that inaugurates the new Sport Prototipi Clienti programme.
As an Ambassador Driver for Maranello’s own marque, Beretta did not compete in the 2024 season, but offered his on-track experience to clients during events dedicated to the exclusive, non-competitive programmes F1 Clienti, Sport Prototipi Clienti, and the XX Programme.