WagonR all the way, Careem require car that has good ground clearance, wide available parts and sadly 660cc will not meet this requirement. WagonR, or 2nd choice is cultus.
Note that if you want to earn more from Careem, I say get brand new Mehran you will be tension free about maintenance. Mehran will be in MINI and GO category. MINI rides are most in demand and peak factor on mean you earn more. But if your goal is to earn slightly less but have more comfort, then WagonR local.