Kimi Raikkonen has admitted he is increasingly frustrated at still being winless eight races into his Formula 1 comeback as his and Lotus's strong form has raised his expectations.
The 2007 world champion, back in F1 in 2012 after a two-year sojourn in the World Rally Championship, is sixth in the points at present and has taken three podium finishes.
Raikkonen said that while he would have been delighted at the prospect of those results before he rejoined F1, the fact that he feels better results have got away is leaving him discontented.
"If you asked me before the start of the season whether I would be happy with podiums I would have said yes, but now I've had some good results, I want more," he said.
"In the last few races the results haven't been as strong as I've wanted. We've finished well but I'm disappointed not to have a win yet.
"We just have to get everything together and I'm sure it can come."
The Finn finished second in the European Grand Prix last weekend, but did not think it was one of his stronger grands prix.
"I think we've been closer to the win at other tracks, but if we see everything going right for us over a race weekend we're not far off," said Raikkonen. "We're certainly getting there."
He added that it would be particularly pleasing if his first triumph with Lotus came at Silverstone next weekend.
"When you win in Silverstone, it gives such a good feeling. You have to get everything exactly right," Raikkonen said. "I won there in Formula Renault and then with Ferrari in 2007.
"It would be fantastic to win again there, especially with the factory just down the road. I'm sure we would have some fantastic celebrations."
The Enstone team's last Silverstone win came in its Renault era, with Fernando Alonso in 2006, while Raikkonen's most recent F1 triumph was for Ferrari in the 2009 Belgian Grand Prix.