Do you have money to buy a car? Answer is NO
Buy a crap car and always keep going to mechanics?
Simple solution is get it financed from Bank, you will get asset right away and doesn't matter if you pay 4/7 lacs on top.
In todays day you cannot save and buy a car. You have 7 today the car you want is 11 tomorrow you will have 11 car you want will be 15..
Your pay is 50k then make installment 10k or what ever is easy for you, it depends on your expenses over all.
I would recommend you stop considering used trashed cars and buy a brand new one.
Opt for brand new suzuki alto 1.5 million, give 7 down payment rest pay for 5 years installments.