Roberto Mancini's men took their tally to an amazing 14 goals in three matches by demolishing Birmingham 5-1.
City are in the box seat for fourth place and the defender said: "We're confident going into the derby. We're winning games and scoring goals so we should have a good chance.
"You know what derby games are like, anything can happen, but hopefully it'll be our day. We're in the driving seat, we just need to keep winning."