@umair2203
The Honda City 1.3l is only sold in Pakistan. Everywhere else in the world the 1.5l or 1.8l engines are standard in the Honda City. So if you are checking the mileage given for the Honda City on Thailand or Malaysian websites then it is for the Honda City 1.5l. The Honda City 1.8l is sold in China.
I have a manual 1.3l City 2013 and it gives me 12 km/l (odometer readout) with A/C in start stop traffic. On longer runs it easily gives me 16 km/l with A/C. Mileage depends on too many factors.
@Alcatraz
If you are concerned about mileage then maybe a 1.3l M/T would be best for you. The 1.5l is for getting good driving pleasure and probably not that suitable for economy.