Babar bhai city doesn't come close to Mira's fuel economy. One thing to note ONLY manual or CVT Mira will give fuel economy not the 3/4 speed auto one.
Btw skullbox has a Mira, contact him for info on the car. Last I talked to him it was roughly 18-19 kmpl in-city.
p.s A clean 2005 city won't cost less then 900k.
Mira Manual (2009), the car has been to Murree and Monal several times during this