Esteban Ocon tested the new A521 car of the Alpine Formula One team for the first time at the Silverstone Ciruit.
Frenchman Ocon is set to partner Fernando Alonso in the 2021 season.
Renault chief Luca de Meo described the new Alpine line-up as a “magnificent duo”.
“Fernando Alonso, he has come back home 20 years after he made his debut with us,” he said.
“He’s a two-time world champion and an international star. He brings us his speed, tenaciousness, his will, his talent, his experience, his commitment.
“Esteban Ocon is a star in the making. He brings his talent in full ascent as well as his fighting spirit and cool head, his humility and consistency.”
The chassis of the new A521, built in Enstone in Britain, which will be the team headquarters, is an evolution of last year’s RS20.
The most striking difference is a complete change in livery. Instead of the familiar yellow and black the cars are painted red, white and blue to reflect both the French and British flags.
Pre-season testing takes place in Bahrain from March 12 to14, with the season-opening grand prix in the kingdom on March 28.