The Argentinian forward has been in tremendous goalscoring form of late, bagging eight goals in City's last nine games.
Carlos Tevez has been outstanding," Mancini has said.
"He is a world-class striker who is in top form.
"He is playing with a smile on his face and to score eight goals during December was an incredible effort.
"He has scored 12 times already for City since he came to the club which is a pretty impressive ratio.
"But Carlos is not just putting the ball in the net. His movement and pace worries defenders and he is clever too.
"His team ethic is fantastic and he has a good understanding with the players around him."