Uneven gaps between individual components are suspect. If the gaps between the bonnet and fenders are of different widths on both sides, the body has probably warped. Well-repaired paint damage is difficult to see with the naked eye. A weak magnet reveals areas that have been filled because it does not stick there. Also, while looking for used cars for sale online try to retrieve data. After purchasing, you can use the Information system of the insurance industry request information about your own car. In the case of total write-offs, the data is stored for a long time; in the case of minor damage, it is usually deleted after a shorter period of time, for example after a repair. What do you think?