New City boss Manuel Pellegrini has made some bigger summer signings including Fernandinho, Jesus Navas, Alvaro Negredo, Stevan Jovetic and Martin Demichelis and Aguero feels that has deepened the playing group so much that are ripe to arrest the title back off neighbours Manchester United.
"I am convinced we are stronger than last season," he told Gazzetta Dello Sport.
"It will be a really competitive Premier League but we have a good squad to win and I would say we are a little better than United and Chelsea.
"City have invested a lot for some years and is growing a lot and quickly. We know that we have to win and the new arrivals know that City wants to become one of the big teams."