Toto Wolff says there will be “consequences” following Mercedes’ clear defeat in Montreal.
With a fresh engine spec, Ferrari’s Sebastian Vettel dominated in Canada, therefore re-taking the championship lead by a single point.
“We came to Montreal thinking our car would be strong,” Mercedes boss Wolff said.
“Now we are going home with the realisation that Ferrari had the better car. In qualifying and the race.
“We need to wake up now. Consequences are necessary, but they are discussed internally,” he told ORF television.
Team chairman Niki Lauda confirmed: “Ferrari had the better car, the better engine and the better fuel consumption.