Mark Webber, Red Bull, Australian GPMark Webber says he plans to investigate all aspects of his Australian Grand Prix in a bid to understand why he finished a distant fifth, more than 41 seconds behind race-winner and teammate Sebastian Vettel.

The Australian has been uncharacteristically outpaced by the Vettel throughout the weekend and was 0.8sec slower than the German in qualifying as well, and seemed to be much heavier on the Pirelli tires than his teammate. Webber admitted that he was disappointed with his performance in Melbourne.

"A tough race, to be honest," said Webber, who employed a three-stop strategy, which compare to the three podium finishers Vettel, Lewis Hamilton and Vitaly Petrov, who all opted for two."I was pushing as hard as I could but I wasn't getting much back so I don't know why. It was similar to yesterday. I haven't been on the pace all weekend and obviously we will look into why."

Asked whether he thought there might have been something wrong with his car, he replied: "I don't know. Of course you have got to look at everything, including yourself. Obviously, to finish that far behind is not really usual so I don't know what happened.

"Let's stay cool –it's the first race. Disappointing not to get a much better result here because it was certainly possible but in the end everyone deserved the result they got today and that's what they got."