The FIA will look into the legality of the McLaren rear wing after both Ferrari and Red Bull questioned the design.
McLaren have added a slot, which aims to reduce drag to such an extent it adds around 10 kph to their straight line speed.
“There’s a bit of a fuss over McLaren’s rear wing,” Red Bull team principal Christian Horner told the Telegraph.
“They have a slot on it [that affects the air flow] and they can pick up a lot of straight-line speed. I think it will get resolved before the first race. We’ve asked the FIA for clarification although I think Ferrari are probably more excited than we are to be honest.”
Horner said the introduction of wing separators was aimed to stop teams stalling the wings.
“Basically, if you stall the wing you take all the drag off it and pick up straight-line speed,” Horner explained. “It’s something that’s been done quite a lot over the years but with the wing separators you’re not supposed to do that.
Our question ultimately will be: ‘Is it clever design or is it in breach of the regulations’?”
He added: “They must be very confident that it’s legal. I would think it will be legal.”