I'm looking for the same car in almost the same budget as you and after searching for more than a week and reading different reviews on this and other forums, I've shortlisted Mira ES to be the best choice among all, especially if your focus is Fuel Economy and Resale along with Spare Parts Availability, but for that, you have to increase your budget to get a clean Mira ES and I'm sure that you'll not regret it.
However, if you have a little knowledge about cars, then buying a PKDM car in your budget is also a good suggestion because it will not require much care in terms of maintenance.
Best of luck in finding a clean car in your budget.