Article To news overview © Getty Images/Red Bull Contentpool After seven seasons of near-perfect reliability on the engine front, Mercedes' power unit reliability issues in 2021 have been unusual. While there's been little effect on the World Championship battle so far, question marks remain over the ability of Lewis Hamilton to get to the end of the season without another engine grid penalty, having taken on a fresh Internal Combustion Engine in Turkey. With Honda seemingly assured of getting to the end of the campaign without any further penalties, barring unusual circumstances, Mercedes have admitted to some concerns with their engine pool, after a fresh unit in Valtteri Bottas' car...
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