Reigning World Champion Lewis Hamilton said he was worried throughout the duration of the Canadian Grand Prix that his engine would fail, as he relinquished the points lead to Sebastian Vettel. Mercedes initially intended to introduce its PU2 for all six of its cars but a quality issue forced the manufacturer to postpone its update until the French Grand Prix. It meant Hamilton, along with Valtteri Bottas and the Force India/Williams drivers, remained with their original spec engines. Hamilton had used his engine across the past six events and radioed his team during the early stages of Sunday’s race to report power drops. Hamilton ultimately came home in fifth position, having lost...
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