When he is not racing, he works as a coach and driving instructor in Europe, America, and China, while commentating the Formula 1 Grands Prix for Swiss television with RSI.

[6] In August 2011, Fontana made his debut in the Formula One–supporting GP3 Series, replacing Vittorio Ghirelli at Jenzer Motorsport for the penultimate round of the season at Spa–Francorchamps.

[8][6] In 2012 he joined the FIA Formula 2 Championship[9] with three podiums and a win, being selected at the end of the year by Lotus F1 Junior Team, thanks also to other points finish in GP3 Series in 4th place, again as a wild card entry and again with Jenzer Motorsport.

At the end of the year he was called by Jarno Trulli to compete in the FIA Formula E Championship last double-round of London Battersea Park, and with the best result in 9th place in the second qualifying.

After that, the last single-seater experience to date was the official GP2 Series test in Abu Dhabi, with Status GP and Rapax Team, with the highest result of 8th in the standings.

2017 was again in Blancpain GT Endurance and 24 Hours of Spa but in PRO-AM, with the Mercedes AMG supported car of AKKA ASP and his Chupa-Chups livery.

He was signed by KIA Motors for the maximum number of rounds a foreign driver could complete, four, taking two pole positions, two wins, and one more podium.

- Fontana was confirmed to race with Adderly Fong in the Silver-Pro class of the GT World Challenge Asia behind the wheel of a Mercedes-AMG GT3 of the Zun Motorsport Crew.

Furthermore, after a long stop of the activities, Fontana has been called to compete in the GT World Challenge Europe Endurance Cup 2020, driving the new Mercedes-AMG GT3 EVO of the AKKA ASP Team.

At the end of the season, he was the unique winner of the combined Silver Championship title, with a gap of 28 points on the 2nd placed, his teammate Ricardo Feller.

Fontana returned to the Fanatec GT World Challenge Europe in 2023 after a year away, competing for his 2022 GT4 European Series employers Centri Porsche Ticino alongside Ivan Jacoma and Nicolas Leutwiler.

[10] With the new german team "Car Collection Motorsport", the line-up won the class title in the endurance cup with 1 race to spare, adding another championship to Fontana's palmarès.