Rosberg says result not representative

The German finished in a disappointing 15th place after a two-stop strategy did not pay off for him.

However, having set the tenth fastest lap of the race, Rosberg believes more was possible.

"My race was not good today, but it wasn't for lack of trying," said Rosberg. "We ran a different strategy to Kazuki just to see if we could generate some advantage, but it didn't pay off and it wasn't a lot of fun driving at the back. It didn't really represent our capability as our pace was okay and we were the tenth fastest car.

"I made a few passes but it was quite difficult to overtake as our top gear was too short. From here we can look forward to Brazil which should be a bit better for us, and then after this season working with the team on a positive winter in order to move us forward for next year."

Teammate Kazuki Nakajima had a better day after choosing a one-stop strategy. The Japanese went on to finish in 12th position.

"I think it was a good race for me considering where I started," said Nakajima. "Initially it was very hard work managing the car on a heavy fuel load. I lost position off the line, but during the first stint I managed to develop a good race pace.

"The other significant part of the race for me was the last period when I had to work hard to keep quite a few cars behind me and defend my position, and I was pleased that I succeeded in this."