Mercedes may not race their upgraded engine at this weekend's French GP with the team set to make a decision after Friday's practices. Although Mercedes initially intended to join Ferrari, Renault and Honda in introducing a B-spec engine at the Canadian Grand Prix, an issue found on the dyno saw that delayed. The team, though, may not even run in Sunday's French GP. According to reports, Mercedes may run their old engine in Friday's practice before deciding whether they want to replace that with the upgrade ahead of Saturday's running. Either way, Hamilton and team-mate Valtteri Bottas are expected to take fresh engines from Saturday whether that be the old spec or the new one. 'At the...
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