Buying a Used Car From a Friend or Family Member: UK Risks, Rights and How to Keep It Friendly

Buying a car from someone you trust sounds like the easiest transaction in the world. No pushy salesperson, no forecourt markup, and you already know roughly how the car has been looked after. Often that’s true, and it can be a genuinely brilliant way to buy.

But it’s still a private sale, and private sales come with almost none of the protection you’d get from a dealer. That’s the bit people forget when the seller is a mate or a brother-in-law, and it’s the bit that turns a lovely favour into an awkward silence at Christmas.

Here’s how to do it properly.

The honest truth about your rights

When you buy from a trader, the Consumer Rights Act 2015 sits behind you: goods must be of satisfactory quality, fit for purpose and as described. If something serious goes wrong in the first 30 days, you can reject the car and get your money back.

Buy privately and that protection simply doesn’t exist. It’s buyer beware - caveat emptor. Your only real comeback is if the seller misrepresented the car: told you it had never been in an accident when it had, or described it as a 1.6 when it’s a 1.4. That’s misrepresentation, and the Misrepresentation Act 1967 gives you possible grounds for a claim. But ‘the clutch has gone six weeks after I bought it’ is not misrepresentation. It’s just old-car life, and it’s your problem.

Which means the whole transaction depends on what you check and what you write down before money changes hands. Do that well and the friendship never comes into it.

Get the paperwork right

A written receipt

Write one. Even between family. Both of you sign and date it, and include:

• Full name and address of buyer and seller
• Make, model, registration, VIN and current mileage
• The price paid and how it was paid (bank transfer leaves a cleaner record than cash)
• The date and time of sale
• A line stating the car is sold as seen, plus any promises the seller has made (‘no known faults’, ‘cambelt done at 68,000 miles’)

That last bit matters. If they’ve promised something and it turns out to be untrue, you have evidence.

The V5C and the transfer

The V5C is the logbook. It proves who the registered keeper is, not necessarily who owns the car. Check the name and address on it match the seller. Check the VIN on the document matches the VIN stamped under the bonnet or in the door shut. Mismatches are a red flag for cloned or stolen vehicles.

The seller keeps the V5C and either hands you the green new keeper slip (V5C/2) from a current-style logbook, or you complete the transfer online at gov.uk using the 11-digit reference and document reference number. Either way, the seller must notify the DVLA. Never accept a car without seeing the V5C, and never let anyone tell you they’ll ‘sort the logbook later’.

Outstanding finance and HPI checks

This is the one that catches people out. If finance is still owing, the finance company legally owns the car - not your friend. They can repossess it from you, and you’d be left chasing your money back privately.

Run an HPI or similar check. A single check costs roughly £10-£25 and reveals outstanding finance, write-off markers, stolen markers and plate changes. Ask for written confirmation from the finance company that the agreement is settled before you hand over money. Verbal reassurance isn’t enough.

MOT, service history and the things that actually matter

MOT history is free at gov.uk/check-mot-history. You’ll see every test, the mileage recorded at each one, and - crucially - the advisories. Corrosion, worn suspension, oil leaks: advisories tell you what’s coming down the road.

Watch the mileage progression. Big jumps, or a number that goes backwards, mean clocking.

On service history, stamps are nice but invoices are better. A folder of receipts for cambelts, clutches, brakes and tyres tells you how the car has really been treated. If the seller says ‘my mate at work serviced it’, ask what was done and when.

What’s a fair price between friends?

Friendship doesn’t change the market. Compare three numbers:

• What a dealer is asking for the same spec, year and mileage (dealers typically ask 5-10% more than private sellers)
• What private sellers are asking on Auto Trader and similar sites
• What a trade buyer like We Buy Any Car would offer (usually 10-15% below private sale value)

Settle somewhere in the private bracket and put that figure in the receipt. A mates’ rate discount is lovely, but be clear with yourself: a discount is not a warranty. If you pay £500 under market, don’t be shocked by a £500 repair bill in month three.

A pre-purchase inspection isn’t an insult

This is the awkward one, and it’s worth pushing through. A pre-purchase inspection from the AA, RAC or a good local independent costs roughly £100-£250 and usually covers a road test, underbody check, fault-code scan and a written report.

Frame it properly: ‘I’d rather spend £150 now than have a conversation about a £1,500 gearbox later - it protects both of us.’ Any genuine seller will say yes. Anyone who gets defensive is telling you something.

Tax and insurance before you drive away

Two things to sort before you turn the key.

Insurance. You need cover from the moment you drive. A day of temporary cover is usually £20-£30, or you can add the car to an existing policy.

Tax. Vehicle tax doesn’t transfer. The seller’s direct debit is cancelled the moment they notify the DVLA, and you must tax the car in your name before driving it on the road - even if it sits in a zero-rate band. Do it at gov.uk using the new keeper slip reference. Driving home untaxed can land you with an automatic fine.

If something goes wrong afterwards

It will, eventually, because cars wear out. How you handle it decides whether you stay friends.

1. Get a proper diagnosis and a written quote before you say anything. ‘The garage says it needs a new clutch, £800’ is a conversation. ‘It feels funny’ isn’t.
2. Consider what’s reasonable. If you bought a 2011 hatchback with 110,000 miles for £2,200, a worn suspension bush isn’t a betrayal.
3. Ask early and plainly. Many sellers will offer to split a bill on a fault that appeared within days, especially if they knew the car well.
4. Accept that legally, unless they lied, it’s your car and your bill. Anything they contribute is goodwill, and it’s worth treating it that way.

The best protection remains the pre-purchase inspection and an honest, unhurried test drive.

Pre-purchase checklist

• V5C present, seller’s details match, VIN on the document matches the car
• HPI check done - no outstanding finance, write-off or stolen marker
• MOT history reviewed, including advisories and mileage progression
• Service history plus receipts for major work
• Two keys, locking wheel nut and any code cards
• Cold start from cold - listen for rattles, watch for smoke
• Test drive of at least 15 minutes, including a dual carriageway stretch
• All electrics: windows, air con, heated seats, infotainment, reversing camera
• Tyre tread, matching brands and brake disc condition
• Pre-purchase inspection booked before money changes hands
• Written receipt signed by both parties
• Insurance in place and car taxed before you drive home

Warning signs worth walking away from

• No V5C, or a logbook in someone else’s name
• Vague or shifting answers about service history
• Seller refuses an inspection or a proper test drive
• Car is ‘sold for a friend’ who isn’t there
• Price far below market - there’s usually a reason
• Fresh paint or mismatched panels with no explanation

Walking away is allowed

If something doesn’t add up, say so kindly and step back. ‘I’m going to leave it, but thank you for being straight with me’ is a complete sentence, and it’s far cheaper than a car you can’t sell on.

Done right, buying from someone you know is one of the best ways to buy: you get the history, you get a fair price, and there are no nasty surprises hiding behind a forecourt shine.

When you’re ready to make that change - whether it’s this week or later in the year - it’s worth a look at UpCars.uk, where every car is checked over properly before it’s listed, so you get a sensible price without quite so much of the guesswork.