Mercedes has confirmed that all six of its Formula 1 power units at this weekend's French Grand Prix are its latest specification that had been due in Canada earlier this month, acting as a boost to Lewis Hamilton's title battle against Ferrari's Sebastian Vettel. Mercedes had intended to introduce its updated power unit to both its factory team and its customers - Williams and Force India - in Canada when Renault, Ferrari and Honda all introduced their new specification engines, only for it to be delayed due to a quality issue. It was confirmed ahead of Friday practice at Paul Ricard that all of the Mercedes, Williams, and Force India cars had received fresh power units ahead of the race...
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