Nick Heidfeld has played down suggestions he might switch with BMW to the German touring car series DTM in 2010.
Shortly after the German manufacturer announced it will withdraw at the end of the season, it was rumoured BMW might turn instead to the more affordable DTM.
Heidfeld, 32, is also yet to confirm his plans for 2010.
"My attention at the moment is completely on formula one," the German said in an interview with sport1.de. "Whether BMW is going to DTM, I don't know.
"You would be better to ask (BMW-Sauber team boss) Mario Theissen," Heidfeld added.