Pep Guardiola's side came from two goals behind to beat Aston Villa 3-2 at the Etihad Stadium to become 2021/22 Premier League champions, pipping Liverpool to the title by one point.
Sterling was introduced from the bench and made an immediate impact, providing the assist for Ilkay Gundogan to score our first of the afternoon.
The Englishman believes that the team's consistent success is something to be appreciated.
"It shows the consistency," he said.
"It shows what a talented bunch of group we have and the determination to keep on winning. This is an unbelievable achievement.
"When the first goal went in I still thought we could do it. When the second goal went in it was a disappointment.
"But with the players we have here you always have a chance with the time on the board. It was an unbelievable win."
The 27-year-old also took the time to praise title rivals Liverpool, who pushed Guardiola's side all the way in the race for the title.
"Each year we come in and we know how difficult it will be," he admitted.
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"Liverpool is a great opponent. They push us every year and that helps us to become better too.
"It’s a great one to add to the tally. It’s an unbelievable achievement."