Kubica fears BMW falling behind

Robert Kubica fears BMW are losing touch with Ferrari and McLaren after struggling to keep up with the pace at Magny-Cours and the Pole had to settle for fifth place.

Kubica is worried by the team's lack of progress in recent months.

"I think we have improved less since Australia than everybody else, so that's the reason," he told reporters during testing at Silverstone.

"Also, Renault and Red Bull are closer to us than at the beginning of the season, so we have to find some parts which will give us better handling, better top speed and better pace. If we lose again in the next couple of races, the gap to Ferrari and McLaren… we will never catch them.

"In Australia we were quicker than Ferrari. In Malaysia and Bahrain we were quicker than McLaren. In Barcelona we had already quite a big gap to Ferrari but still keeping close to McLaren.

"And then afterwards, McLaren in some occasions joined Ferrari. Ferrari did improve and it looks like we didn't as much as them. The gap is pretty big and in Magny-Cours it was nearly one second."