Mercedes team principal Toto Wolff says the "unusual" step made by Ferrari's power unit this year has left the Silver Arrows scratching their heads. Ferrari's straight-line dominance has troubled Mercedes all season, although issues on the chassis side have prevented the Scuderia from challenging for championship glory in 2019. Article continues under video The engine power was laid bare in Russia last weekend, where Mercedes estimated that Ferrari were eight tenths per lap quicker on the straights. Wolff believes extracting more power from the engine is unlikely and admits that thoughts have been cast to Ferrari finding a solution that has so far eluded the constructors'...
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