Goals from Antoine Semenyo, Omar Marmoush and Savinho powered the Citizens to a dominant result over the visiting Eagles.
After the match, the former England international raved about the depth within City’s squad and singled out a number of standout performers.
"Never question Pep. City were really good today, a lot of boys got a run-out – Savinho got a run-out, Phil Foden was terrific,” Hargreaves told the Premier League website.
“Marmoush looked good, make some terrific runs and a terrific finish. City have got a terrific squad and we saw some beautiful moments from their flair players. City aren't giving up, are they?"
