A stunning John Stones followed by a spectacular 13th goal of the season from Erling Haaland, ensured Pep Guardiola's side made it two wins out of two in Group G.
Our Bundesliga visitors proved tough and obdurate opponents and had taken a 56th minute lead through Jude Bellingham’s header.
City though summoned up another fantastic fightback and we drew level through a spectacular 25-yard shot from Stones on 80 minutes.
And within four minutes, a dramatic comeback was complete when Haaland spectacularly rose to meet a superb Joao Cancelo cross field pass to down his former Dortmund team-mates.
Relive our Champions League triumph via our Pitcam highlights, which bring you closer to the action than ever before.
Pitcam highlights are available to watch on CITY+ and Recast.
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It will allow you to watch full-match replays of all Men's and Women's matches, selected broadcasts of Women's, Elite Development Squad and Academy matches and provides access to the full catalogue of City Studios documentaries.
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