While his Singapore crash may have cost him a World title, Sebastian Vettel says his collision with Lewis Hamilton in Baku was worse as he “let the team down.”

Believing that Hamilton had brake checked him at the Azerbaijan Grand Prix, Vettel pulled alongside Hamilton and deliberately swerved into him.

Vettel was slapped with a 10-second stop-go penalty but escaped further sanctions after admitting “full responsibility” and extending his “sincere apologies” for his actions.

And although that wasn’t the defining moment in his season, Vettel says it was his worst.

“I think Baku was worse [than Singapore],” he told Autosport in an exclusive interview.