Sergio Aguero grabbed a hat-trick as Manchester City humiliated Chelsea away in a half an hour blast off to move back to the top of the Premier League while shambolic Chelsea moved to 6th position.
Raheem Sterling scored the opening goal as he tapped his 13th goal of the season.
Sergio Aguero sliced wide when offered up a completely unmanned goal, but made up for it but thumping in an unstoppable blast from the edge of the area.
The Argentine doubled his tally and became City's all-time leading scorer outright with a simpler finish after a defensive mix-up.
Ilkay Gundogan also netted in the first quarter of the game as City ended what could have been a testing week with a trip to Everton in between the visits of Arsenal and Chelsea with maximum points.
Sterling returned to the score sheet in the last 10 minutes with another tap in after a stunning team move to complete the victory and condemn the Blues to their worst defeat in 28 years.
Chelsea striker, Gonzalo Higuain, had little chance to shine but the Argentine striker was unfortunate not to score his third goal of the season.
Recall that Chelsea's 4-0 defeat to Bournemouth in their last away game was their heaviest league defeat since 1996.
Chelsea worst loss in any competition since 1991 after failing to recover from Sterling’s fourth-minute opener.
