Mercedes has “question marks” over its Formula 1 engine after Valtteri Bottas required his third new set of power unit components in four events at Sochi, taking him onto his fifth internal combustion engine, MGU-H and turbocharger of the season.
Lewis Hamilton hasn’t had to take any grid penalties for components outside of his season allowance yet, but it’s almost inevitable that he will have to.
And with Mercedes expressing wider concerns over the reliability of its engines even when parts are fresh, and Max Verstappen expecting to be OK for the rest of the season following the penalties he took for new parts in Russia, Hamilton is likely to face some engine-related pain in the title race.
Edd Straw delves deeper into Mercedes’ engine situation in the video below.
