I am thinking about buying a car, but not sure what precautions I should take not to buy a stolen or unregistrable car. Right now I am considering buying a car which is not registered and has no rwc. As far as I know you can check with police if the car is stolen or not using its VIN, engine number or bodyshell number, are those the ones I need? If not, what will I need? Is it possible to check that online? Also, what kind of damages of a car would make it unregistrable? Are there any other issues I should worry about when buying a car? I am located in Melbourne. Any help on these topics will be much appreciated. Thx in advance.