Pep Guardiola‘s men made an electric start under the floodlights at the Etihad Stadium, with Phil Foden expertly turning with the ball and firing into the bottom corner from just inside the box after just three minutes.
The second goal came shortly before the hour mark, with the lively Savinho sprinting down the right flank and delivering a cross for Erling Haaland, who adjusted his body superbly to acrobatically jump and flick the ball into the corner of the net.
Six minutes later, John Stones continued his scoring form after his Premier League heroics last weekend, looping a header into the net from a Nunes cross.
The attacking intensity continued and Haaland doubled his tally with just over 20 minutes left to play, finishing off a sweeping move involving Rico Lewis and Foden with Nunes playing an accurate final pass.
With two minutes to play, Nunes got the goal that his performance deserved, striking in confidently from the penalty spot after he was fouled inside the box.
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The victory now means we have seven points from three Champions League games in the league phase, with five fixtures left to play.
View the best images from the victory via our gallery below.