Toto Wolff admits Mercedes are encountering some “headaches” about how to best utilise their engine supply this year. With only three power units allowed to be used by each driver without incurring a penalty, a 22-race season is creating huge demands. Several drivers have already had to move on to engine No 4. Three of them – Max Verstappen, Charles Leclerc and Nicholas Latifi – did just that at round 15 of the campaign, the Russian Grand Prix. That was also where Mercedes’ Valtteri Bottas took his fifth engine, amid speculation it had been done to try and stall Verstappen’s progress through the field from the back of the grid. However, it has been reported there were some...
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