Max Mosley has confirmed he will not be standing for re-election as FIA president later this year, proposing former Ferrari team principal Jean Todt as his successor.
Mosley had suggested he would keep his options open after becoming infuriated by comments made by Ferrari president and FOTA chairman Luca di Montezemolo in the wake of a peace pact being agreed three weeks ago.
But in a letter sent today to all member clubs of motor sport's world governing body, Mosley has made it clear his 16-year reign will come to an end in October this year.
The 69-year-old has revealed he received 100 messages of support urging him to stand again, citing them as 'deeply rewarding' and for which he was 'very grateful'.
But with a new Concorde Agreement close to being signed, and in respect to his family - in particular losing son Alexander to drug abuse just over two months ago - Mosley has decided to call it a day.
In the letter Mosley said: 'From a personal point of view it would be very difficult for me to change my mind and stand again.
'I began some months ago to re-arrange my family life with effect from next October. I also informed senior FIA staff I would not be a candidate.
'To continue now would greatly complicate my domestic arrangements and be inconsistent with my obligations to my family, particularly after our recent loss.
'Also, I have felt for some time I would like to work less. After all, I will be 70 next year.
'Therefore, with these new arrangements in place, extremely grateful though I am for all the letters, emails and messages I have received, I have decided to reconfirm my decision. I will not be a candidate in October.'