The Argentine moved level – and then past – Thierry Henry, before joining Frank Lampard on 177 goals in England’s high flight.
Only 3 men – Alan Shearer, Wayne Rooney and Andy Cole – are still ahead of him on the all-time Premier League list.
Aguero’s number of hat-tricks could be a Premier League record.
It was a part of a uncompassionate city performance as they took apart a Villa side who were suffering their worst defeat since city beat them at 6-0 at Villa Park in Feb 2016 and have dropped into the relegation zone.
Riyad Mahrez scored the first 2, with Gabriel Jesus rending Aguero’s double simply before half-time.
The result leaves city second, the very best position they need occupied following a full round of matches since the start of November, though they continue to be fourteen points behind leaders Liverpool, having played a game more.