The Brazilian denies he was a flop during his time at Eastlands.
Robinho, 26, said: "I don't think it is fair to say that I was a disaster at City.
"It's important to remember that I scored 14 goals in my first season and ended up as the club's top scorer. Not too many more players in the Premier League scored as often as me so it was not all bad.
"For my first year in the Premier League, it went pretty well. I felt the City crowd was on my side. The trouble came in the second season.
"I had injury problems and the new coach Roberto Mancini went with other options in attack.
"I'm not going to blame him because he respected me. But I needed to play regularly with the World Cup coming up.
"England is a hard place for a Brazilian to perform. It was a culture shock for me and I became very unhappy."