Bottas forced to switch back to old-spec engine

Shortly before the opening practice session got underway, Mercedes was forced to make a swift change of engine on the Finn's car after the issue was discovered.
It is the latest in a run of niggling issues that have emerged with the Phase 2 engine ever since it was introduced for the first time at the Canadian Grand Prix.
In Montreal, Lewis Hamilton had a nervous build-up to the race when ...Keep reading