As Valtteri Bottas moved onto his fifth PU, one of two Mercedes-powered drivers hit with engine penalties in Russia, Toto Wolff says there are 'question marks' over their engine. For the second race in a row Bottas found himself at the back of the grid after taking on new engine parts. But while his new hybrid system in Sochi was thought to be a move by Mercedes to try hold up Max Verstappen, Bottas later revealed that there was a problem with the engine that he took at Monza. 'We've had quite a few issues and it's obviously becoming a bit of a problem,' said the Finn explaining that he 'had to' take a new engine on Sunday. 'I think I have this one [in the pool], then one very old one.' He...
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