In 2016, Marini was signed by the Forward Team to compete full-time in the same class; he got his first Grand Prix points in Qatar, where he finished in 10th place, and his best result in Germany, where he had a 6th-place finish. Marini still remained with the team for
In 2018, Marini achieved his first podium in Germany and his first victory in Malaysia.
2019
In 2019, he secured two podiums in Mugello and Assen, leading to back-to-back wins at Thailand and Japan.
2020
In 2020 Marini became a contender for the championship title along with Enea Bastianini and Sam Lowes, the first round of the season saw Marini retire at Qatar but would clinch his first win at the second round at the Spanish Grand Prix and claim a second-place finish in the second Jerez round (the Andalusian GP), with more point scoring finishes at Brno (4th place) and another second-place finish at the Austrian Grand Prix and a point finish in Styria before claiming his second win and a 4th place respectively at the two Misano rounds before adding a third win at Catalunya.
Marini finished the French Grand Prix outside the points in 18th and at the first Aragon round he highsided off his bike and retired from the race with Lowes taking first place in the next three rounds with Marini finishing the same three rounds (Teruel, Europe, and Valencia) in 11th, 6th and 5th place respectively and finishing 2nd in Portugal behind Remy Gardner who would claimed his first win.
Marini finished the 2020 Moto2 season as the championship runner up with 196 points with over three wins and three 2nd place finishes which put Marini ahead of Lowes who had scored exactly the same points as Marini but Lowes claimed third and Marini second at the final race which meant that Marini was ahead of Lowes on countback, with Bastianini being nine points ahead of both of them.
MotoGP World Championship
Sky VR46 Avintia (2021)
For 2021, Marini moved to the MotoGP class joining the Esponsorama Avintia team along with 2020 Moto2 Champion Enea Bastianini, Marini however would use the Sky VR46 livery on his bike while Bastianini would use the Avintia livery.
For the first two rounds of his rookie season at Qatar, Marini ended up finishing 16th and 18th respectively while his teammate Bastianini finished 10th and 11th in the first two rounds. Portimao saw improvement for Marini as he managed to make it into Q2 of Qualifying through free practice and started 8th on the grid, he finished the race in 12th place.
For 2023, Marini finished the season for Mooney VR46 Racing Team in eighth place. He took his first premier class podium at Austin, and his first pole position at the Indonesian Grand Prix.
Repsol Honda Team (2024–)
Marini initially signed one year extension with the VR46 team,[4] however rumors began circulating the paddock about Marini being linked to a vacant seat at the Repsol Honda team left by the 8-time world champion, Marc Márquez. The VR46 team subsequently confirmed Marini's departure, with Honda confirming the signing of Marini two days later.[5]
Career statistics
FIM CEV Moto3 Junior World Championship
Races by year
(key) (Races in bold indicate pole position, races in italics indicate fastest lap)