Sebastian Vettel insists he has no regrets over his decision to call time on his Formula 1 career at the end of the season despite rolling back the years on the track.
The four-time world champion announced in July that 2022 would be his final year in F1 with his Aston Martin team at that point languishing towards the bottom of the constructor standings.
But both Vettel and the team have enjoyed an upturn in form since the summer break, particularly in the last three races, with the German even finding himself leading Sunday's US Grand Prix in the latter stages.
