Rodri has been a mainstay in the City midfield since joining from Atletico Madrid for a then club record €70m in the summer of 2019.
The Spain international still had two years remaining on his previous deal but City have moved swiftly to secure his long-term future at the Etihad Stadium.
Rodri has made 151 appearances for Manchester City, scoring 13 goals and winning two Premier League titles and two League Cups.
“Joining City in 2019 is the best decision I have made in my career,” Rodri told City's official website.
“I have loved every second. The fans have been amazing with me, I feel totally supported by the club and the manager pushes me every single day.
“I have improved so much as a player, and I want to thank Pep (Guardiola) and all the backroom staff for their help. They are completely committed to helping me become the best player I can be, and I appreciate their hard work.”
“We have been very successful since I came here, which is something that makes me very proud,” Rodri added.
“But to be honest, that success has made me even more hungry for me. Once you start winning big titles, you don’t want to stop.
“City, I feel, offers me the best chance of winning trophies and that’s why I am so pleased to be staying here for longer.”
Txiki Begiristain, City’s director of football, said: “Rodri has been exceptional since coming here, so I am delighted we have managed to agree this new deal.
“He is the perfect example of what a top professional should be: he has a fantastic attitude, lives his life in the right way, takes care of his body and trains hard every single day. That is a manager’s dream, and I know Pep loves working with him.
“He has improved a lot since coming here and, for me, he is now one of the best in the world in his position.”
