City dominated this encounter from the beginning and it was only brave defending by the visitor’s that kept the host’s at bay until just after the half-hour.
The visitor’s had only one of their last 36 away games in the top flight and any hope of a fightback ended when YaYa Toure collected David Siva’s pass from a short corner to fire home number three.
But City showed why they are genuine title contenders by simply going through the gears and Mario Balotelli was there to finish brilliantly. Substitute Adam Johnson then completed the rout with his goal in injury time.
Referee: Howard Webb
Venue: Etihad Stadium
Man City scorers: Aguero 32, Nasri 51, Y Toure 68, Balotelli 88, Johnson 90
Norwich scorers: Morison 81
TRIBAL ASKS: It may still be early days, but who will stop City from claiming the Premiership crown?
Yellow cards: Surman (NOR)