Ross Brawn has admitted he has begun to think about retiring.
The Briton has played down rumours he is at loggerheads with Norbert Haug, but acknowledged that if the 2011 car is disappointing, his role as Mercedes team principal will be in danger.
As for next year, the 55-year-old told the Telegraph: "I will definitely be there next year. 100 per cent. I don't have any ambitions to be anywhere else."
But Brawn, who stepped down from Ferrari a few years ago before taking a sabbatical and returning with Brackley based Honda, also admitted that "I will retire one day".
"For the next few years I will focus totally on getting this team to the front of the grid and then, almost like at Ferrari, I want to start working on a succession plan so that I can ease back a bit," he added.
Brawn said he plan is to stay in F1 "but maybe not have to come to 20-odd races every year".