MONTREAL, Canada -- Sebastian Vettel says Ferrari's engine upgrade was key to the Italian team returning to the top of the podium at the Canadian Grand Prix.
Vettel scored his first victory since April's Bahrain Grand Prix on Sunday, retaking the lead of the championship as his main rival Lewis Hamilton struggled home to fifth. Ferrari brought an engine upgrade to this weekend's grand prix while Mercedes postponed its planned update by one race due to reliability concerns.
After taking pole position by less than a tenth of the second from Mercedes driver Valtteri Bottas, Vettel believes the boost in engine performance was crucial for Sunday's result.