Manchester City consolidated fourth place in the Premier League as two goals apiece from Nedum Onuoha and Emmanuel Adebayor inspired a 5-1 demolition of Birmingham here on Sunday.
Roberto Mancini's side are now four points clear of fifth-placed Tottenham.
Carlos Tevez's penalty put City in front and Onuoha added a second, with Adebayor touching in a third after Cameron Jerome had pulled one back.
Onuoha scored a fourth midway through the second half before Adebayor complete the hammering with a fifth goal late on for City, who host rivals Man United next weekend.
City had the visitors pinned in their own half for long stages without working Maik Taylor, who took the place of on-loan City goalkeeper Joe Hart in the Birmingham goal.
Onuoha wrapped the game up with his second goal with a quarter of an hour remaining.
The defender attempted to pass to Adebayor but the Togo forward made a different run and Onuoha ran on to the ball before shooting into the corner of Taylor's net.
Adebayor completed a comprehensive victory when he raced onto a long clearance and calmly guided the ball past Taylor in the 88th minute.