What to check before buying a used car

At a glance: before buying a used car, check its documents, bodywork, engine, gearbox, electronics with a diagnostic scan and behaviour on a test drive. Here are the essentials from our checklist of at least 300 points.

1. Documents

Check the DUA (vehicle registration document), that the VIN on the car matches the paperwork, and whether there are any encumbrances, such as a lien or seizure. Check the valid IPO inspection, paid IUC road tax, service book and number of keys. Compare the mileage with the service history.

2. Bodywork and paint

Look for uneven panel gaps, different paint shades and signs of body filler. A paint thickness gauge helps identify repainted panels — we measure every panel. Check for rust and inspect the glass and headlights.

3. Engine and gearbox

A cold start is particularly revealing: listen for noises and look for smoke and vibration. Check for oil and fluid leaks, belt condition and how the clutch or automatic gearbox works.

4. Electronic diagnostics

A scanner reads all modules for active and stored faults. An experienced mechanic can also spot signs of recently cleared faults, a common tactic before a sale.

5. Suspension, wheels and brakes

Check tyre manufacture dates and remaining tread, brake discs and pads, shock absorbers and protective boots.

6. Interior

Check the air conditioning — we measure its temperature —, airbags, infotainment and windows. Wear on the steering wheel, pedals and seats should be consistent with the mileage.

7. Test drive

Assess acceleration, gear changes, steering, braking and unusual noises. Afterwards, check for warning lights on the dashboard.

Why it helps to use a mechanic

Some issues are hard to spot without equipment: repainting, cleared faults or mileage tampering. GRANT Check-Up includes at least 300 points, including computer diagnostics and a test drive, at least 50 photos and videos, and the expert’s assessment of what is in good condition and what may need spending on. AI writes and checks the report. The price for cars on the portal is 149 EUR (VAT included).

Frequently asked questions

How long does the inspection take?

You get the report right after the check, within 24 hours at most.

Is a vehicle lift needed?

A lift allows the mechanic to inspect the underbody and chassis rails. The standard check is done without a lift: whatever is not visible is marked “not visible”; if needed, an additional lift inspection at a garage can be arranged.

Is this the same as an IPO inspection?

No. IPO checks compliance with mandatory safety requirements. A pre-purchase inspection helps you understand the car’s actual condition and potential future costs.