Mercedes boss Toto Wolff admitted that the problems the W05s struggled with in Canada could become a regular issue if they aren't able to analyse the cause of the mysterious drop in power both cars suffered.
Nico Rosberg and Lewis Hamilton had again pulled away from the field over the first half of Sunday's race in Montreal, but both cars suffered a power drop that saw them lose a couple of seconds per lap to the chasing field.
Ultimately the problem led to a failure of the brakes for Hamilton, who had to retire for the second time this season, while Rosberg hung on to second place behind Daniel Ricciardo.
"We had, at exactly the same time, a failure of the engine control systems on...
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