Protest against Mercedes rear wing rejected
Mercedes can continue using its so-called "F-duct" rear wing in Formula One races as race stewards on Thursday rejected a protest from Lotus against the system.
The rear wing's legality was discussed since the start of the season, but the car passed scrutineering ahead of Sunday's Chinese Grand Prix just as at the first two races in Australia and Malaysia.
Mercedes' system reportedly channels airflow through the chassis to the nose for additional downforce and higher top speed.
The system is said to be coupled to activation of the DRS mechanism and the debate centred on whether it constitutes a driver-operated aerodynamic device which would be illegal under F1 rules. Mercedes say it is independent of DRS.
Mercedes driver and record world champion Michael Schumacher was not concerned about the latest protest, saying that others always step in if someone has a good idea.