[4] Trulli made his single-seater debut at the start of 2021, partnering Enzo Scionti in the Formula 4 UAE Championship at Cram Durango.

[5] He would become embroiled in a close title battle with Dilano van 't Hoff throughout the campaign, winning four races and finishing on the podium a further nine times.

A podium in the final race at the Dubai Autodrome meant that Trulli would win the title, a sole point ahead of his Dutch adversary.

[7] For his main campaign in 2021, the Italian moved to the Euroformula Open Championship with Drivex School, once again driving alongside Enzo Scionti.

[17] Having "[worked] really hard to do Euroformula" before the 2022 season,[18] Trulli progressed into the FIA Formula 3 Championship at the last minute, partnering Zak O'Sullivan and Brad Benavides at Carlin.

[19] Trulli was set for his best finish of the season in Spa-Francorchamps sprint race with 16th place, but was disqualified due to a red flag infringement.

After failing to find a spot in Super Formula, Trulli pivoted to the 2024 Italian GT Championship with Easy Race.