[citation needed] On January 22, 2021, Deledda was announced to be signing for HWA Racelab in Formula 2, partnering fellow countryman Matteo Nannini.

For the 2022 season, Deledda left single-seaters to join the Deutsche Tourenwagen Masters, driving a Lamborghini Huracán GT3 Evo for Grasser Racing.

[9][10] The Italian took part in the 24 Hours of Daytona at the start of 2023, competing for NTE Sport in the GTD category.

[11] His main campaign would once again lie in the DTM, where Deledda teamed up with Mirko Bortolotti and Franck Perera at SSR Performance.

For the 2024 season, Deledda entered the International GT Open as part of the Oregon Team, driving alongside Lamborghini factory driver Jordan Pepper.

[16] On 26 November 2020, Deledda caused a stir after publishing several videos on his Instagram profile of himself driving recklessly and with high speed on an Italian motorway near Pomezia, Lazio.

[18] Deledda posted a statement in Italian on his Twitter on November 27 saying that he's sorry they associated the video with his name and that his intent was and will always be to "raise awareness" among his followers about "similar acts of villainy".