Rosberg expects to return to form

The team endured a troubled time in Barcelona as they could not match the speed they have shown in the most of the early season races - but Kazuki Nakajima did provide some consolation with a seventh placed finish.

However, with Turkey providing one of Williams' best performances in terms of speed in 2007, the team are bullish about another points haul this time out.

Rosberg, who finished on the podium in the season-opening Australian Grand Prix, said: "I'm looking forward to Turkey. It was our strongest race last year in terms of pace in comparison to the front runners so I think we can do well there. The circuit itself is great and it should suit our car.

"We've spent some time analysing our performance in Spain, where we took the wrong set-up direction with the car in the opening sessions. We've learnt from that mistake so we should definitely take a step forward next weekend. I'm looking forward to it."