How to Inspect a Used Car Before You Buy It

A careful inspection is your best protection against buying someone else's problem. You do not need to be a mechanic to do a lot of it well - a systematic routine, good daylight and a willingness to ask questions go a long way. For the mechanical items, hiring a qualified mechanic for a pre-purchase inspection is money well spent. Use this as your working checklist.

Exterior and bodywork

• Walk around the car and look down each panel for colour mismatches, ripples or overspray that suggest accident repair.
• Check that panel gaps are even and consistent on both sides.
• Inspect for rust, especially around wheel arches, door bottoms and the boot floor.
• Check the windscreen and windows for cracks, and the lights for cracks or moisture inside.
• Look at the tyres: tread depth, the age and brand match across all four, and uneven wear that hints at alignment or suspension issues.

Interior

• Check seats, seatbelts, carpets and the roof lining for damage, heavy wear or a musty smell that could indicate water/flood damage.
• Test every electrical item: windows, locks, air conditioning (does it cool properly?), lights, wipers, horn and the infotainment system.
• Turn the ignition to the ON position and confirm the dashboard warning lights illuminate and then go out - a light that stays on, or bulbs that never come on, deserve investigation.
• Compare the odometer reading with the car's general wear; heavily worn pedals and seats on a "low mileage" car are a warning sign.

Under the bonnet (engine bay)

• With the engine cold, check oil and coolant levels and look at the oil for a milky appearance that can indicate a serious problem.
• Look for leaks, corrosion, frayed belts and any signs of recent hurried repairs.
• Start the engine and listen: it should settle to a steady idle without knocking, rattling or heavy smoke from the exhaust.
• Blue, white or black smoke that persists is a reason to get a mechanic's opinion before buying.

Underneath the car

If you safely can, look under the car for leaks, damage, heavy rust, or signs of impact to the underbody and exhaust. Fresh undercoating over one area can sometimes hide previous damage. This is an area where a mechanic with a ramp adds real value.

The test drive

Always drive the car yourself, and over varied conditions if possible, not just a slow loop of the seller's street. Pay attention to:

• Starting and idle: clean start, steady idle, no dashboard warnings.
• Acceleration: smooth power delivery without hesitation, jerking or unusual noise.
• Transmission: smooth automatic shifts with no slipping; a clean clutch and no grinding on a manual.
• Braking: the car stops straight and firmly, with no pulling, vibration or squealing.
• Steering and suspension: the car tracks straight, the steering is not vibrating or wandering, and bumps feel controlled rather than clunky.
• Noises: listen with the radio off for knocks, whines or rattles that change with speed or steering.

After the physical inspection

A clean inspection is necessary but not sufficient. Finish by verifying the VIN and history and reviewing the ownership and customs documents. Only when the car, the history and the paperwork all line up should you move to payment.

Save this checklist on your phone and take it with you. When you are ready, browse cars on Folex Auto Market and put every candidate through the same routine.