JPM not happy, but no new engine

McLaren Mercedes driver, Juan Pablo Montoya, is not satisfied with the Mercedes engine placed in his MP4-21. Montoy said he'd prefer a new engine, but McLaren refused to do so. McLaren doesn't want the Colombian to get a penalty by switching the engine because according to Ron Dennis there is nothing wrong with the engine.

Juan Pablo Montoya "The engine doesn't have enough power. I don't know why, but I am 7 km/h slower than Kimi on the straight with the same kind of engine. If we don't want to end up in 10th or 12th we should think about changing that engine. But I'm not the one who makes the decision about that."

Ron Dennis "The engines are perfectly fine. There is no difference between our engines."

http://www.f1technical.net/news/2062