01What the inspection should cover
Confirm vehicle identity and mileage; scan accessible modules; review readiness monitors; inspect visible leaks, belts, hoses, fluids, tires, brakes, battery condition, charging voltage, lights, HVAC operation, and obvious collision or flood indicators.
02What an OBD-II scan cannot prove
A clean code scan does not prove the vehicle is fault-free. Recently cleared codes may show incomplete readiness monitors, while mechanical wear, collision repairs, fluid leaks, and intermittent faults may not trigger a warning light.
03Questions to ask the seller
Request the title status, service records, cold-start access, permission for a road test and scan, known defects, recent repairs, and whether the seller will allow a shop lift inspection if the mobile review finds concerns.
04When to walk away or escalate
Pause the purchase for title inconsistencies, overheating, low oil pressure, severe structural corrosion, active transmission faults, airbag faults, coolant-oil mixing, or a seller who will not permit reasonable inspection.