I would never recommend buying a second hand car, unless one knows user very well. You never know if you are getting a really a good car or it is a junk which has be done up for sale. I bought a second hand Fiat and then 118 NE, and both cars I had worst experience. Even though they looked excellent and were hardly used for 3 years, I could hardly use them for few months without any trouble and then one after another trouble started. I spent so much in repairs that I could have got new car in that. You never know how the previous owner has used, many times km reading are fake etc.
Some times if you know owner then you can be sure of. Prefer doctor’s car since they are always well maintained
Best way is to buy new car, nothing like the feel.