FI rules in favor of Button's Brawn

PARIS: Formula One's governing body yesterday approved the use of a car part that helped Brawn GP's Jenson Button win this season's opening two races.

The FIA's International Court of Appeal ruled that the rear diffusers are legal and "comply with the applicable regulations". It rejected an appeal by four teams against the technology, which channels the flow of air from the front to rear and helps create greater downforce through corners.

The decision was a victory for diffuser users Brawn GP, Toyota and Williams and could force their rivals to quickly add the devices to catch up.