Guide
Used Car Inspection Checklist
Most expensive used-car mistakes are avoidable with a careful walkaround and test drive. Use this checklist before you hand over any money — or run a full assessment in the CarsJudge AI app, which includes a 39-point inspection checklist.
Exterior
- Panel gaps and paint mismatch (signs of past repairs/accidents).
- Rust, especially around wheel arches and underneath.
- Tire tread depth and even wear (uneven wear can mean alignment/suspension issues).
- Glass chips and cracks; working lights.
Interior
- Wear consistent with the mileage.
- All seats, windows, locks and AC/heat working.
- No musty smell (possible water/flood damage).
- Dashboard warning lights at startup that don’t clear.
Engine bay & underneath
- Oil and coolant levels and condition; no obvious leaks.
- Belts and hoses not cracked or perished.
- No fresh fluid drips under the car after it sits.
Test drive
- Smooth cold start, steady idle, no smoke.
- Smooth shifts, no slipping or clunks.
- Straight, quiet braking; no pulling or vibration.
- No unusual noises over bumps or when turning.
Documents
- Title status and that the VIN matches everywhere.
- Complete service history and any open recalls.
- A vehicle history report for accidents and ownership.
Frequently asked questions
What should I check before buying a used car?
Inspect the exterior for accident/rust signs, the interior and electronics, the engine bay and underside for leaks, then do a thorough test drive and verify the title, service history and recalls. A pre-purchase inspection is wise for any car without full records.
How do I know if a used car has been in an accident?
Look for mismatched paint, uneven panel gaps, and replaced or repainted panels, then confirm with a vehicle history report. Uneven tire wear and aftermarket parts can also be clues.