A couple of years ago I sought to buy a car through some banks based on the adverts they put on the newspaper and I discovered that:
1. The adverts are largely misleading, in short, they are pure unadulterated lies. You will get an entirely different story the moment you step in there. One of the banks had advertised that you do not need to have an account with them, just provide all they are asking you to, but when I got there they said I am not eligible, I pointed out that the advert said having an account is not necessary, but the lady ignored me.
This is in addition to the fact that by the time you are shown the terms and conditions, you will disqualify yourself before they tell you you are not qualified.
2. I am not a financial person but by the time the amortization was explained to me I detected fraud in most cases.
My conclusion is the conditions of buying a car through the banks makes saving for the car look like a piece of cake, and if you finally do buy the car, talk to someone who understands the tricks the banks use to monitor your loan repayment or else you will repay what you rightly owe plus much more.
Here in Nigeria if you have a good income that can assist you to pay back the loan without stress and you are ready to put up with unprofessional Nigerian bankers then buy through the bank, otherwise buy with your cash and have fun.
As for asset or liability that is immaterial, what matters is do you need a car? Can you maintain the car?