While Aguero was forced to retake his penalty after the initial one was saved by Declan Rice, who was said to have been caught by VAR leaving his line just before the lick was taken.
City were simply breath taking on the ball and the pace and fitness was evident compared to West Ham who are set for another frustrating season.
Last season they failed to do that, this time round they must do better.
The 27-year-old winger was omitted from City's Community Shield victory over Liverpool last weekend by Pep Guardiola after suspicion the forward ingested banned substances while on worldwide duty with Algeria.
"It's hard to talk when you lose 5-0 in a game, but I don't think the score reflected the difference between the two teams".
Jesus became the first player to have a goal disallowed by the Video Assistant Referee (VAR) in the Premier League when, in the 53rd minute, he finished off Sterling's pass following a fine move.
Sterling's hat-trick, which he completed in just 40 minutes, was the first on a Premier League opening week in almost a decade when Chelsea's Didier Drogba scored three against West Bromwich Albion back in August 2010.
"Since we started this season in China and the Community Shield he's scored one goal minimum every game", Spaniard Guardiola told City's website.
Aguero made it 4-0 in the 86th, and Sterling wrapped it up in injury time, becoming the first since Didier Drogba in 2010-11 to start with a hat-trick on the league's opening weekend. 'He seems to know what the Premier League is about already, ' Wilshere added. But that's normal. The first game, away, 12.30 kick-off, hot.
'In the first half the game was close. Defender Chris Mepham had put the Cherries ahead in the 62nd minute.
The England captain's two late goals mean he has now scored six goals in as many Premier League games against the Villains.