The 26-year old Argentine striker has penned a five-year deal with the English champions, keeping him at the Etihad Stadium until the summer of 2019.
Aguero, whose deal was announced at the club's 'City Live' event on Thursday night, said that he was absolutely delighted to commit his future to City after initially arriving from Atletico Madrid in 2011.
"The reality seems to be that ever since I came here, during every close season, there have always been rumours suggesting that I might be returning to Spain," he said following a standing ovation.
"There has always been this speculation but I certainly never pay much attention to it.
"People hear this stuff flying around and they take it seriously but I can tell the fans and everyone at City to relax, I'm going to be here until I see out my contract.
"Each year, I aim to better the previous one. Last season was incredible but I'm not just satisfied with two Premier League titles, I want more and I can achieve them here alongside my teammates.
"This club is special; the fans, the stadium, the staff, the atmosphere, the new facility we're moving into - everything!
"We have enjoyed lots of success and some incredible moments but the overall vision for the future and where we are going are the reasons why I wanted to stay here, to win trophies and to keep making history through my best years."
Since arriving at the Etihad, Aguero has scored 75 goals in 122 appearances in all competitions for City while winning two Premier League titles and one City Player of the Year award.
Manchester City FC (@MCFC) August 14, 2014
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