Monday 12 May at 11:55 : Nick Heidfeld insists that he is not under pressure from BMW-Sauber to up his game, despite in Turkey once again being outclassed by teammate Robert Kubica.

The 31-year-old German said the fact that his Polish colleague seems to have a slight edge on him at the moment is "annoying", but not particularly a worry.

"He is only four points ahead of me," Heidfeld told the German news agency SID.

"The season is long. I will get him.

"I will work on my driving, and warming up my tyres faster.

"But there has been no criticism by my employer," he clarified.