Op if you want better average than DONT go for swift, gives around 10 and maybe if you drive it with a really light foot ( why did you even buy this car if you want to drive it with a light foot :P) 11,
apart from that the annual token tax will be more especially if you are non filer
People claim bold averages of swifts , but mostly from what i have seen in my car and other owners 11 is a descent figure .
Sure you can get a passo , but for me its interior is just bland and a BIG turn off
If you want new and can digest the madified bolan shape then go for wagon R,
Vitz is also an option but it has vibration issues on idle , noisy engine , very under powered ( I own a 2010 model)
all depends on what your requirements are and how much you want to compromise, do you want auto/manual , new/ used, pkdm /jdm
start short listing cars according to the above options and then find a clean car that you have selected (if used)