Mercedes pinpointed the precise cause of George Russell’s DNF at the Canadian Grand Prix: a catastrophic battery failure. Technical Director James Allison confirmed the power unit suffered an engine kill a third of the way into the race, forcing Russell to stop while leading. Russell, who secured the Sprint win and was locked in a tight battle with teammate Kimi Antonelli for the lead on Sunday, lost crucial points.

Allison admitted the DNF marred an otherwise excellent weekend for Mercedes, where their first major upgrade package delivered significant performance. The team noted clear heat damage to the "unhappy" battery and is now scrutinizing the exact root cause. This reliability blow widened Russell's championship deficit to Antonelli by a significant 43 points. Mercedes must swiftly diagnose and rectify this critical component issue to maintain their recent performance momentum and ensure future reliability.

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