Mercedes could face a protest in Australia with reports claiming Lotus are not happy with their rival's wing stalling device.
Mercedes have introduced a new device this season which is believed to use the activation of the car's Drag Reduction System (DRS) to stall both its front and rear wings.
The wing was given the all-clear by FIA race director Charlie Whiting.
That, though, may not stop rivals from protesting with Sky Sports F1 analyst Ted Kravitz revealing that Lotus could do just that.
"I've just been to seen Lotus boss Eric Boullier and he has said that Lotus will protest," he said.
"They went to see Charlie Whiting earlier in the day for clarification along with Red Bull and Charlie told them as far as he was concerned it was legal because this rear-wing stalling device is operated by the DRS wing popping up and then it does its thing.
"Lotus and Red Bull therefore believe it is driver operated. Mercedes believe it is not driver operated.
"Their argument is that its passive and therefore legal. Eric Boullier thus believes he has no option but to protest the result of qualifying to determine whether it is legal and whether they can do it."
'Brawn: New concept not a game changer