i bought my car from alta for 7lack 20thousand. Yes i know that's alot of money but i feel that it was worth every penny since i'll be keeping it for a long time.
mine is a 1.0 auto "upgrade packagage" 2003 model with navigation screen japanese auction grade 4.5 car.
As for the milage i recall it being around 12 if i drive it or 16-17 when my wife drives it.
To bu a vitz i'll always suggest you go to KHI and deal with alta since he is not a thief. local dealers always try to sell you some garbage which is made to look and run nice till your first service. the car i bought was trouble free and has been that way since i've had it.
for prices you'd be better off speaking to altamash on 03332135567 since his prices will be more up-to-date.
If you are planning on fitting CNG i'd advise you to try to find a good manual model since CNG and auto gearboxes on small engines don't really go together. My suggestion woudl be to go for a 2001 or 2002 manual 3-door since it'll be your personal car (it looks better and will cost less than a facelift model).
Alta can help you finance a car and everything else,.. all you have to do is to agree on a car and price with him and the rest can be sorted out at the same time, he's very helpful in these respects.
if you need anything else please feel free to ask me at any time.