Mercedes may be rethinking its commitment to formula one, but the same is currently not true of fellow German carmaker BMW, motor sport boss Mario Theissen insists.
Like Mercedes, however, the Munich marque's executive committee does regularly review its support for the Swiss based team BMW-Sauber, he admitted.
"Formula one (for BMW) is valuable," 56-year-old Theissen is quoted as saying by RTL.
"Before the season the project was evaluated again in detail and the financial situation was part of the analysis," he explained.
"But in the long-term we also need success," said Theissen.
So far, the 2009 ambition to fight for the championship is in tatters, with just 4 points on the board after the first four races.
Robert Kubica and Nick Heidfeld, who collided in the first corner in Bahrain, were ultimately lapped by the leaders and dead last at the finish, and now desperately waiting for a technical update for the Spanish grand prix.
