Run the data check first. Then check the car in daylight, at the seller's home address.
The whole point of buying privately is the saving. No forecourt margin, no warranty padding, no dealer overhead baked into the price. That gap between what a dealer charges and what a private seller asks — that's real money.
The sensible thing to do with some of it is spend it on not getting burned.
That might mean a professional inspection. It might mean bringing a mate who knows cars. Or it might just mean knowing what to look for yourself and taking your time. This guide covers all three — but start with the data check, because there's no point paying for an inspection on a used car that fails the basics before you've left the house.
Get the registration number before you commit to viewing. Run the free check on any private sale car — does the make, model, colour, and year match the listing? Does the mileage look right for the age? Does it have a current MOT?
Then look at the MOT history properly. This is where the picture of an owner emerges.
Advisories are not failures — they're warnings. A single advisory on worn tyres or a blown bulb means nothing. The same advisory appearing on three or four consecutive MOTs means someone who does the minimum to pass the test and no more. Tyres, bulbs, brake pads — these are consumables, cheap to fix. An owner who repeatedly ignores them is an owner who skimped on servicing too. That's the car you're inheriting.
Look for the pattern, not the individual item. Recurring advisories on brakes, suspension, or steering are a different matter — those aren't consumables and they tell a specific story about neglect.
Run a reverse image search on every photo before you contact the seller. Right-click any photo, search on Google Images. If those photos appear anywhere else — another listing, another seller, a different price — this may be a fake listing and the photos have been stolen from a real car advertised elsewhere.
Before you travel anywhere, ask the seller to show you round the car on a live video call. A genuine seller with a real car will do it. Someone using stolen photos cannot.
This is easy to overlook because buying a car feels like an ordinary thing to do. It isn't entirely. You are travelling to meet a stranger, at an address you've only just been given, potentially with several thousand pounds ready to transfer.
Tell someone where you're going before you leave. Share the address. Let them know when to expect you back. If you're going alone, arrange a check-in call.
Don't take a large amount of cash to a first viewing — and never take cash you can't afford to lose to meet someone you've only spoken to online. Agree the price before you travel. Pay by bank transfer on the day, after you're satisfied and the V5 transfer is done.
Trust your instincts about the situation, not just the car. If something feels wrong when you arrive — the address doesn't match what you were given, the person seems evasive, the pressure to decide is immediate — you are allowed to leave. You don't owe anyone a purchase.
Paint defects, filler, mismatched panels, rust — all dramatically easier to spot in natural light. An evening viewing under a driveway lamp tells you very little about the condition of a used car.
If the seller can only do evenings, that's their choice. It's also a reason to be more thorough, not less.
Not a car park. Not a petrol station. Not outside a Tesco.
A private seller with nothing to hide has a home address and is happy to give it to you. Someone who wants to meet somewhere neutral is removing your ability to verify the car is actually theirs.
Ask to use the loo. What you're actually doing is confirming you're in a real home — that this is a real person at a real address, not someone who has borrowed a car for the afternoon. A genuine seller won't find this strange.
The V5C should show the registered keeper's name and address. Check it matches the person you're standing with, at the address you're standing at.
Check the service history. Are there receipts? Do the dates and mileages on the receipts stack up against the MOT records? A full folder with consistent stamps means something. A vague claim that "it's always been serviced" without any paperwork means nothing.
Do the receipts reflect the mileage in the MOT history? An owner claiming 60,000 miles but with a service receipt showing 45,000 from two years ago needs to explain the gap.
If they're selling on behalf of someone else — a friend, a family member, anyone — and that person is not present, walk away. You have no way of verifying the car is theirs to sell, and no recourse if it isn't.
Always arrive before the seller starts the engine. Always.
A cold engine tells the truth. Smoke on startup, rattles that disappear once warm, hesitation before it catches — these are things a seller can hide by warming the car up first.
If you arrive and the engine is already running, ask them to let it cool down before you start it again. A genuine seller will understand. A seller who pushes back has just told you something.
You don't need to be a mechanic. Here's what to check:
Before you view any used car privately, search YouTube for the make, model, and year followed by "common problems." Owners and mechanics flag the known issues for specific models — timing chain stretch on certain engines, known rust spots, suspension wear at particular mileages.
Ten minutes before the viewing is ten minutes very well spent. It tells you what questions to ask and what to look for specifically on that car, not just cars in general.
A second pair of eyes is not the same as a qualified inspection, but it's better than going alone — both for safety and for the check itself. Someone less emotionally invested than you will notice the thing you missed because you'd already decided you wanted it.
That emotional investment is real. You've driven an hour. You like the colour. You can already picture yourself driving it. That's exactly when you stop looking properly.
Bring someone whose job it is to be sceptical.
This is where some of the money you're saving on a private used car purchase is well spent. A qualified mechanic comes to the car — you don't have to be there — inspects it properly, and sends you a full report.
| Provider | Cost | Notes |
|---|---|---|
| ClickMechanic | From £79 basic, £137 premium | Cheapest option. Same or next day available. 185-point check, report emailed to you. |
| AA | £142–£191 | Uses AA inspectors. Flexible on timing. |
| RAC | £116–£267 | Generally considered the most thorough. Uses their own engineers. Less flexible on timing. |
On a £4,000 private sale purchase, £79 to check it properly is straightforward maths. But run the data check first — there's no point booking an inspection on a used car that has outstanding finance or a write-off marker. Rule those out for free before you spend anything.
When you buy the car, transfer the V5 electronically at the point of handover — on GOV.UK from your phone, at the same time as the money changes hands. It takes five minutes. It creates an immediate record that the vehicle has changed hands and protects both parties.
A seller who makes this awkward is not following the correct process. Ask why.
Private sales are fine. The savings are real. Use some of that saving to protect yourself.
Tell someone where you're going. Run the data check before you travel. Go in daylight. Meet them at home. Ask to use the loo. Cold start. Check the documents match. Look at the MOT history for patterns, not just failures. Do the model-specific research first.
And if anything feels wrong — the address, the person, the pressure to decide quickly — you are allowed to leave. You don't owe anyone a purchase.
Before the viewing. Before the test drive. Before the bank transfer. Run the free check on the registration first — rule out the basics before you travel anywhere.