Stewart believes Mosley will have to go

Mosley is may quit after a newspaper claimed he took part in a Nazi-style orgy.

Sir Jackie Stewart, has clashed with Mosley over many issues in the past.

On Sunday it emerged that Formula One supremo Bernie Ecclestone, a long-time associate of Mosley, had invited F1 team bosses to sign a letter calling for Mosley to stand down and said he would add his name if they all signed it.

Seven teams agreed, but three did not - Ferrari, Toro Rosso and Williams.

Mosley has called an extraordinary meeting of FIA members for 3 June, where he will face a vote of confidence.