Kimi Raikkonen says it would be wrong for Lotus to believe that it has been unlucky not to win a race so far this year.

The 2007 world champion got his fourth podium finish of the season in Germany following Sebastian Vettel's post-race penalty while team-mate Romain Grosjean has made the top three twice.

Lotus has been close to winning on some of those occasions, but Raikkonen says that the fact that it has missed out so far this season cannot be put down to bad luck.

"Luck is nothing to do with it," said Raikkonen. "It's not unlucky if something goes wrong, it's because we did something wrong ourselves.

"If something breaks, it means somewhere there has been a mistake with a part or whatever it is, so it's not strong enough or has been designed wrong.

"Normally it's human error. It's the same as if I do a mistake in the car; it's not unlucky, it's my mistakes. That's racing."

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