From HPI checks to test drives, everything you need to know before handing over your money on a used car in the UK.
Why buying used makes sense
A new car loses around 15–25% of its value the moment it leaves the forecourt. Buy a car that's two or three years old and someone else has absorbed that depreciation hit for you. You get a nearly-new car at a significantly lower price — often with remaining manufacturer warranty too.
The used car market in the UK is enormous, which means more choice, more competition between sellers, and better deals for buyers who know what they're doing.
Step 1: Set your budget — and stick to it
Before you look at a single car, decide your maximum spend. Factor in not just the purchase price but insurance, road tax, fuel, and servicing costs. A £10,000 sports car might cost twice as much to run as a £10,000 family hatchback.
If you're financing, focus on the total cost of credit — not just the monthly payment. A low monthly figure spread over five years can cost far more than a slightly higher payment over three.
Pro tip: Use the total cost of ownership, not just the sticker price, to compare cars fairly.
Step 2: Run an HPI check
An HPI check (or similar vehicle history check) is non-negotiable. It tells you whether the car has outstanding finance, has been written off, stolen, or has a mileage discrepancy. It costs around £10–£20 and could save you thousands.
Never buy a used car without one. If a seller refuses to let you run a check, walk away.
- Outstanding finance — you could inherit the debt
- Write-off history (Cat S, Cat N, Cat B)
- Stolen vehicle status
- Mileage discrepancies across MOT records
- Number of previous owners
Step 3: Check the MOT history
The DVLA's free MOT history checker shows every MOT result, advisory notice, and failure reason going back years. This is a goldmine of information. Repeated advisories for the same issue suggest a problem the owner has been ignoring. A car with a clean, consistent MOT history is a much safer bet.
You can check MOT history for free at gov.uk/check-mot-history.
Step 4: Inspect the car in person
Photos can hide a lot. Always view a car in daylight, on a dry day, so you can spot paint imperfections, rust, and panel gaps clearly. Check all four corners for accident damage — mismatched paint, uneven panel gaps, and overspray inside door shuts are all red flags.
Open and close every door, boot, and bonnet. Check all the electrics — windows, mirrors, air con, infotainment. Sit in every seat. Look under the car for oil leaks or corrosion.
Pro tip: Bring a magnet. Body filler used to hide accident damage won't attract a magnet — genuine steel panels will.
Step 5: Take it for a proper test drive
A five-minute drive around the block tells you almost nothing. Ask for at least 20–30 minutes, including motorway or dual carriageway speeds. Listen for rattles, knocks, and vibrations. Check the brakes feel progressive and don't pull to one side. Make sure the gearbox shifts smoothly through every gear.
If the seller won't let you drive it, or makes excuses, that's a serious warning sign.
Step 6: Negotiate confidently
The asking price is rarely the final price. Use any faults you've found — advisory items, worn tyres, missing service history — as negotiating leverage. Research what similar cars are selling for on AutoTrader and CarGurus to know your floor.
Private sellers generally have more flexibility than dealers, but dealers offer more legal protection under the Consumer Rights Act 2015.
Final checklist before you hand over money
Before you sign anything or transfer funds, make sure you have everything in order.
- HPI check passed with no issues
- V5C logbook present and matches the car's details
- Service history present (full is ideal, partial is acceptable)
- MOT valid for at least 3 months
- All keys present (at least two)
- Payment made securely — bank transfer or card, never cash