My Dear Brothers,
Mileage depends on many factors, so there is no outright right or wrong/ low or high consumption.
I have bought Suzuki Alto 660cc a week ago and it gives me 14km/L within city with AC (On & Off) but I am sure after getting the Oil, Oil Filter, Air Filter and pluges changed, it will get better.
Fuel consumption depends highly on:
Usage - Long or within City plus how you accelerate
Unfortunately in Pakistan, we get the lowest grade petrol which adversely affects the fuel economy. (Just for your information the High Octane we get in pakistan is of lower grade than the normal petrol sold in UAE/ Saudia Arabia.)