Real world mpg

[Chebbyfan]

My 99 extended cab fullsize is getting tired (221,000 miles) and I'm kinda looking into early model Colorado/Canyon 4x4s.  Can someone give me real world mileage numbers on early model extended cab or quad cab 4x4s?  I commute back and forth and this truck mileage has been bad for a while, but I've just lived with it.  I just can't do it any longer.  Thanks for the help.