Pep Guardiola’s side made a flying start at the Ohio Stadium, racing into a two-goals inside the first six minutes with Erling Haaland netting from the penalty and then firing home almost straight from the restart.
City then bagged another quickfire double early into the second half.
First, Oscar Bobb maintained his superb form on tour with a smart finish before Haaland then struck again 74 seconds later to seal his hat trick.
Though Chelsea substitutes Raheem Sterling and Noni Madueke both struck to reduce the deficit, it couldn’t deflect from another fine evening’s work for City.
With the squad now returning to the UK, the focus will switch to next weekend’s Community Shield clash with Manchester United.
Play the video to enjoy the best of the action from Ohio…