Sergio Marchionne says “driver error, or driver misjudgement” played a role in Ferrari’s title defeat, it wasn’t just technical issues.

Although a spate of engine issues in Malaysia and Japan have been largely blamed for Sebastian Vettel losing the World title to Lewis Hamilton, his chances were helped by his own mistakes.

The German has admitted that he let the team down in Baku when he was handed a stop-go penalty for retaliatory contact with Hamilton while his Singapore GP crash, in a race that he started from pole position, also didn’t help his cause.

Vettel officially lost the title in Mexico when Hamilton took an unassailable 56-point lead in the standings.