What must I know before going to buy a second hand car?

Buying a second hand car now-a-days is a comparatively a good option as it requires less capital investment ,depreciation is also low and one can even buy the luxury models in relatively less price
To buy a second hand car, the very first thing one is to decide is on the model as it will help in the process. A very important point is to check the car thoroughly by remembering the key points as checking the condition of battery, by checking the engine, it should be a smooth starter.
A well maintained engine would not produce any unusual noise and emit smoke while accelerating. Also check for oil spouting from exhaust, check whether the tyres are in a good conditions or not, look for the wear and tear and also the alignment.
Check bushings, springs and sounds from the bearings. Wheel bearings can be expensive ,as it gives a chance of bargaining too. Inspect the chassis of the car, the bodyline will give you an indication whether the car has met an accident or not.
Also look for signs of repainting. Check whether all the body parts are of same colour.Check the air conditioner is working in right order.
The very important point is to insure that the paper work is in order ,check the registration of the car issued by the RTO .
The other point to be checked is taxation book as it shows the status of tax paid which is to be paid once in a life time by the real owner .The original insurance papers and the invoice papers are also need to be checked .PUC certificate is also need to checked.