Mercedes reveal the power unit failure behind George Russell’s Canadian Grand Prix exit

It is a bitter pill to swallow for Mercedes. George Russell was leading the Canadian Grand Prix, fresh off a Sprint victory, only to have his race brought to an abrupt halt on Lap 30. Watching him stop on track and throw his headrest in a moment of pure, raw frustration—an act he later apologized for—was a reminder of how quickly the top of the mountain can turn into a nightmare.

Technical Director James Allison has now confirmed exactly what killed that machine. It was a catastrophic failure in the battery that forced an engine kill, leaving the car stranded a third of the way into the event. Allison admitted the team is still analyzing the heat damage to understand why the battery became so unhappy. While Kimi Antonelli went on to win, the disappointment of letting George down has clearly left a mark on the squad.

This retirement is more than just a mechanical disaster; it hits where it hurts in the standings. With Russell out of the race, the gap to his teammate Kimi Antonelli has ballooned to 43 points. It is a massive blow for the Briton, especially on a weekend where the team’s first major upgrade showed such genuine, exciting promise.