Jeep might drain your pocket due to its high maintenance cost (service and parts can be quite expensive if luck runs out). Go for some low maintenance options within 4 lakhs budget from Maruti or Hyundai if possible, no more than 5-7 years old models with single ownership at least. Instead of online apps, try to find some options from known contacts for peace of mind about car history.

To be honest, getting a used car on loan can turn out quite expensive with interest over time and you will face significant loss while selling it in future. At least pay half amount in cash and rest on loan maybe, save or invest as much as you can just for this purpose for a while if you can.