Buying a used car checklist: history checks, test drive, inspection and red flags

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A used car can be excellent value, or an expensive mistake. The difference usually comes down to preparation and a willingness to walk away. Work through this checklist and you will avoid the most common traps.

1. Research before you look

Set a total budget that includes insurance, tax, registration, fuel, servicing and a buffer for early repairs, not just the purchase price.
Shortlist models that suit how you drive. Read owner reviews and reliability surveys, and look up known problems for each model, engine and year.
Check running costs: insurance quotes, typical repair costs and parts availability can vary widely between similar cars.
Know the market value by comparing several listings for the same model, age and mileage.

2. Dealer or private seller?

Buying from a dealer usually costs more but often comes with some form of warranty and, in many countries, stronger legal protection if the car turns out to be faulty. A private sale can be cheaper, but your rights are usually more limited, so the checks below matter even more.

3. Run a history check

What is available depends on where you live:

United Kingdom: the government's free online MOT history service shows past test results, recorded mileage at each test, and failures and advisories for cars registered in England, Scotland and Wales. Paid history checks add things the MOT service does not, such as outstanding finance and insurance write-off records.
United States: reports from approved National Motor Vehicle Title Information System (NMVTIS) providers show title brands such as salvage or flood damage and odometer readings. Commercial history reports can add accident and service records. Not every state supplies complete data, so no report is perfect.
Elsewhere: most countries have an official vehicle register or insurer-run service. Search for your government transport authority's guidance.

Whatever the system, check that the vehicle identification number (VIN) on the car matches the paperwork, and look for mileage that jumps backwards or rises suspiciously little.

4. Look over the car in daylight

Body: mismatched paint, uneven gaps between panels or overspray on rubber seals can mean accident repairs.
Rust: check wheel arches, sills, door bottoms and underneath.
Tyres: uneven wear can point to alignment or suspension problems. Check tread depth and that all four match.
Under the bonnet: look for leaks, low or dirty fluids, and a milky residue under the oil filler cap, which can signal a serious engine problem.
Inside: wear on the steering wheel, pedals and seats should match the mileage. Test every switch, window, the air conditioning and the lights, and check for damp carpets or a musty smell.
Start it from cold. Ask the seller not to run the engine before you arrive. Warm engines hide starting problems and smoke.

5. Test drive properly

Drive for at least 20 to 30 minutes on a mix of roads if you can, and make sure you are insured to do so.

Listen for knocks, whines and rattles; turn the radio off.
Check that it pulls away smoothly and the gears change cleanly.
Test the brakes firmly where it is safe: the car should stop straight without vibration or pulling.
On a straight road, it should not drift to one side.
Watch the dashboard for warning lights, during and after the drive.

6. Get an independent inspection

For anything other than a very cheap car, pay a qualified independent mechanic or an inspection service to check it before you buy. It costs a fraction of the price of most repairs and gives you a list of issues to negotiate on. A seller who refuses to allow an inspection is a red flag.

7. Check the paperwork

Registration documents in the seller's name, at the address where you are viewing the car.
Service history with receipts and stamps that match the mileage and dates.
Proof of recent inspections or roadworthiness certificates where your country requires them.
Any outstanding recalls, which you can usually check with the manufacturer or your transport authority.

8. Negotiate calmly

Base your offer on comparable listings and on faults you found, with costs where you can.
Make a fair offer and be quiet; let the seller respond.
Be ready to walk away. There is always another car.

Red flags

The seller will not meet at their home or a business address, or the name on the documents does not match.
Pressure to decide immediately, or a price far below the market.
Requests to pay by untraceable methods, or a deposit before you have seen the car.
Missing documents, a "lost" service book, or a history check that does not match the story.
An engine that has already been warmed up, or a fresh steam-clean hiding leaks.

Get a written receipt with both parties' details, the VIN, the price and the date, and arrange insurance before you drive away. What did you learn buying your last used car, or what would you like checked? Share your tips and questions in the comments below.