Mercedes has answered Red Bull's claim that the rear wing endplates of its W12 car display "score marks" that suggest that the aero element is flexing under load. Red Bull has directed much of its attention on Mercedes to its car's remarkable straight-line speed which it believes is being achieved by a trick involving the W12's rear wing. Red Bull team boss Christian Horner has threated to protest its rival if the score marks it identified in Brazil – a tell-tale sign of flexing according to the Briton – are seen again in Qatar this weekend or in the final two races of the 2021 season. "When you have a 27 kilometre [per hour] difference, and you see marks on rear end...
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