oh okay,
i was suggesting Cultus because it is easier to maintain and relatively more comfortable and spacious than Mehran.
I was going to suggest a Chuha shape or Daddu shape or whatever animal shape City you can get in 18 lakh budget.. but yes, you are right, finding a clean 80% maintained piece in this budget is near to impossible.
Then Swift is your best bet .. however, keep in mind that the car requires a bit more attention and care .. like sometimes you will see ABS light comes on, but then goes away to never come back, and the other brake pedal pressing and slave clutch cylinder issue i've mentioned..
i bought a used car Swift, and fell victim to my excitement and the word of the dealer (whom i knew) and he sold me quite an abused car (meter reversed for sure)... maybe that's why my car had these issues.. and after buying it, mechanics became my friends because i used to visit then qutie often for works : )
just make sure to inspect the car properly and my advice is to go for even an older model for higher price than a newer model for lower price whichever one is in better shape (body wise first and then engine wise).. yahan per log body hi dekhtay hain wo sahi hai to sab sahi hai ..engine to banta rehta hai baad main bhi : /