The Blues have now slipped to sixth in the Premier League table, below Arsenal on goal difference.
And this was their worst loss in any competition since 1991 after failing to recover from Sterling's fourth-minute opener. We started well but after four minutes we conceded a goal in a stupid way.
"My first year was hard too".
"Something is changing. At the moment I am not able to see the reason but I have to work for this because my target is to play my football, not to change another football because at the moment we are playing another football".
"To score six against Chelsea and the way we played, we had so much attention (to detail)".
He then said in his press conference: "I don't know [about my future], you have to ask the club".
"But people don't understand how hard it is to do something - my first year was hard too. It needs time, it only depends on the belief of the owners and the people in charge".
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The nomination of the king's older sister, who has starred in soap operas and an action movie was a shocking move. Her shock nomination broke with a long-standing tradition of members of the royal family staying out of politics.
Aguero should even have had more, having missed a sitter in the early stages and headed against bar on a dismal afternoon for Chelsea, whose manager Maurizio Sarri headed straight down the tunnel at full-time. "I don't know why".
Liverpool maintain the advantage of a game in hand over City, but given a reprieve by draws for Jurgen Klopp's men against Leicester and West Ham in recent weeks, the champions look determined to become the first side in a decade to retain the Premier League.
Guardiola believes his team have the same appetite for success as his great Barcelona side."It is there", he said. "Normally people fall down after what we have done last season but we are still there".
Guardiola fell to the floor in exasperation when Aguero somehow side-footed wide with his easiest chance of the game moments later.
But he need not have anxious that would prove a costly miss as the Argentine made amends in stunning fashion by blasting into the top corner from 25 yards to double City's after just 13 minutes. But of course as usually I will go to say hello to him later, as usual.
But Dean, being Dean, opted to have a little fun, hiding the ball up the back of his shirt out of sight of Aguero, whose 11th hat-trick puts him level with Alan Shearer for the most in Premier League history.
Sterling wrapped up a brilliant afternoon's work after substitute David Silva opened up the Chelsea defence yet again and Zinchenko picked out the England worldwide.