Accident history versus honest respray: how inspectors tell the difference
The paint-depth gauge starts the conversation but does not finish it. An inspector maps readings across every panel, looking for the pattern: one repainted door with factory readings everywhere else reads as a cosmetic fix; elevated readings across a whole corner of the car, plus filler-thick numbers on a quarter panel, read as collision repair. From there the inspection goes structural: tool marks or disturbed factory paint on the bolts holding the bonnet, doors and wings; missing or repainted factory spot welds along the radiator support and inner wings; kinked or wrinkled chassis rails visible from under the car; aftermarket headlights or a windscreen with a date stamp newer than the car; panel gaps that vary from one side to the other.
Airbag history is the non-negotiable check. A repaired car whose airbags deployed should show it in the OBD scan or in dashboard trim that no longer matches, and some repairs simply fit resistors to switch the warning lamp off. An inspector who checks that the airbag lamp illuminates with ignition and then extinguishes, and who scans the airbag module for crash data, is doing the part of the job you cannot do with your eyes.