Tresson had entered the Gran Turismo Academy trials the year before his eventual victory, failing to make the top five in France on that occasion and being excluded from the finals at Silverstone. He returned in 2010 with a focused approach, navigating through online trials that attracted 1.2 million participants to reach the finals, where he defeated Italian competitor Luca Lorenzini to claim the 2010 GT Academy Europe title. The GT Academy was a competition jointly operated by Nissan and Sony PlayStation that identified talented sim racers and gave them the opportunity to become professional drivers, providing a structured real-world driver development programme following the gaming phase.
Like his predecessor Lucas Ordoñez — the 2009 GT Academy winner — Tresson was studying for his master's degree when he put his academic career on hold to pursue motorsport. He had been pursuing an engineering degree with a specialisation in the automotive sector and had completed part of his studies on placement with the IMSA Performance Matmut team, which had already brought him to Le Mans in a behind-the-scenes capacity.
Tresson made his professional racing debut in the GT4 European Cup in 2010, driving a Nissan 370Z prepared by RJN Motorsport. He ended the season tied for fourth place in the drivers' standings alongside Lucas Ordoñez, his RJN team-mate and the 2009 GT Academy winner. The two drivers shared the same points total despite not sharing a car at any round. The official Gran Turismo Academy record also notes two podium finishes in the GT4 Cup during this period following the completion of the Drivers Development Programme.
Tresson returned to RJN Motorsport for 2011, this time competing in the Blancpain Endurance Series in the GT4 class alongside British drivers Alex Buncombe and Christopher Ward in a Nissan 370Z. The trio won two class victories from five races, including the Total Spa 24 Hours GT4 class, and clinched the GT4 class title at the final round at Silverstone — a circuit Tresson was already familiar with from his GT Academy finals.
Tresson stepped up to prototype competition for the 2012 FIA World Endurance Championship season, joining the Signatech-Nissan squad in the LMP2 class in an Oreca 03-Nissan. He described the Le Mans 24 Hours as a dream he had held since childhood — watching Ayrton Senna and regarding Le Mans as the ultimate stage for a young French driver — and acknowledged the preparation that went into approaching the circuit virtually through Gran Turismo before experiencing it in a prototype.
At the 2012 24 Hours of Le Mans, Tresson raced alongside Franck Mailleux and Olivier Lombard, completing 340 laps for a 16th-place overall finish and ninth in the LMP2 class. His best championship result came at the Bahrain round, where he finished second. The GT Academy profile credits him with a second-place finish at a round of the 2012 FIA WEC and ninth place overall in LMP2 at Le Mans.
Tresson was released by Nissan before the 2013 season ended, learning of the decision through a press release rather than through a direct communication — an experience he later recounted as "a process devoid of etiquette." He indicated publicly that he was prepared to step away from professional motorsport following the episode.
Tresson returned to competition in 2019, racing in the VLN Nürburgring endurance series in the SP9 Pro Am class. He achieved at least two round wins during that campaign, in rounds 6 and 8.
Tresson's career stands as a significant early case study in the capacity of the Gran Turismo Academy to produce genuine competitive racing professionals. His Blancpain Endurance Series GT4 title in 2011 — secured in only his second full season of international racing — demonstrated real competitive ability beyond the novelty of his gaming-to-racing origin. The engineering background he brought to his driving career, his methodical approach to prototype transition, and his willingness to discuss the realities of driver development in the sim-to-real pathway have made his story a reference point for the intersection of simulation gaming and professional motorsport.