Used Car Inspection Checklist: What to Check Before You Buy
A practical, do-it-yourself checklist for inspecting a used car before you commit — from the outside in.
5 min read · Updated 14 Oct 2026
Key Takeaways
- Check panel gaps are even on both sides of the car — uneven gaps can indicate prior accident repair
- Look for oil leaks around the engine block, check coolant and oil levels and colour (milky oil can indicate a head gasket issue), and listen for unusual noise at idle before you even start the test drive
- Test every power window, the AC on both hot and cold settings, the infotainment system, and all warning lights on the dashboard at start-up — a light that stays on after startup needs an explanation
Even if a professional inspection is arranged, knowing what to check yourself during a viewing helps you ask the right questions and avoid an obviously bad deal.
On This Page
1. Walk Around the Body First
Check panel gaps are even on both sides of the car — uneven gaps can indicate prior accident repair. Look at paint under good light from an angle for colour-matching inconsistencies between panels, another accident-repair signal.
2. Check Under the Bonnet
Look for oil leaks around the engine block, check coolant and oil levels and colour (milky oil can indicate a head gasket issue), and listen for unusual noise at idle before you even start the test drive.
3. Inside the Cabin
Test every power window, the AC on both hot and cold settings, the infotainment system, and all warning lights on the dashboard at start-up — a light that stays on after startup needs an explanation.
4. The Test Drive Itself
Drive on a mix of surfaces if possible — listen for suspension noise over bumps, check the brakes do not pull to one side, and for automatics, pay attention to shift smoothness, especially at low speed in traffic.
5. Documents to Cross-Check on the Spot
Match the engine and chassis numbers on the RC against the physical car, confirm the registered owner name matches who you are dealing with, and check the insurance and PUC validity dates before you leave.
Frequently Asked Questions
Can I do a thorough inspection without any tools?
Yes — most of what matters (panel gaps, paint consistency, fluid checks, warning lights, test drive feel) needs no special tools, just attention.
How long should a proper viewing and test drive take?
Plan for at least 30-45 minutes to cover the car properly rather than a rushed 10-minute look.
Is it rude to ask to see the service book?
Not at all — a seller with nothing to hide will have this ready, and hesitation here is itself useful information.