The FIA, F1's governing body, is not investigating the legality of the Red Bull 2010 F1 car, even if there has been speculation that the Milton Keynes-based outfit might be using some sort of ride height adjustment system.

McLaren boss Martin Whitmarsh and Mercedes boss Ross Brawn both called on the FIA to look into the issue after qualifying for last weekend's Australian GP, in the interest of 'fairness' to Red Bull.

Red Bull's Christian Horner denied that they had any such system that could adjust the ride height according to the amount of fuel on board, but added that the FIA would be welcome to examine the Adrian Newey-designed RB6 and that 'clarification' would be good for everyone.

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Swiss newspaper, Blick, reported earlier this week that the FIA is now looking into the matter and added that 'whether there is a decision before the Malaysian GP is open'.

However, an FIA spokesperson told Germany's Auto Motor und Sport that 'there is [in fact] no investigation'.

More to follow as and when it develops...