Schumacher unsure over F1 future
Michael Schumacher was non-committal about his F1 future after seeing Mercedes sign Lewis Hamilton as his replacement from next season.
Schumacher has failed to bring the team much success since ending his retirement three years ago, and recent reports have suggested he was about to call it a day again.
He has been linked with the vacancy at Sauber caused by Sergio Perez's defection to McLaren, but his concentration for the rest of the season is on getting results for Mercedes.
Schumacher said: "I have had three nice years with the team which unfortunately did not go as well as we all would have wanted on the sporting side.
"I wish Lewis well and for the team to achieve the success we worked so hard for in the build-up.
"I would like to thank the team for their trust and all the guys for their unconditional commitment. I will now concentrate on the next races."
Team principal Ross Brawn added: "Michael's energy and commitment have never wavered, even when results have not matched our own expectations, and we are determined to finish the 2012 season together on a high.
"As always, it has been a pleasure to work with Michael."