If a dealer sold you a Cat S car without telling you, the car was not as described and you are entitled to reject it. A recorded write-off is part of what a vehicle is, not a detail a seller gets to leave out. What matters now is speed and paperwork.
Before you write a word to the seller, get the marker in front of you in a form you can attach to an email. A write-off check returns the category and the date the insurer recorded it. That date does the heavy lifting. If the car was written off two years before it was advertised to you as unrecorded, the seller cannot argue it happened after you drove away.
Be clear about what the record does and does not tell you. It confirms an insurer wrote the car off and under which category. It does not describe the damage, name the repairer or judge whether the repair was any good. If you want the definition itself, the Cat S page covers structural damage that was assessed as repairable, and our guide to the write-off categories sets the letters side by side.
Print it, screenshot it, and note the check date. You want a document with a timestamp, not a memory of something you saw on a screen.
Enter the registration and get the key facts before you commit to the car.
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Everything from here splits along one line. A trader is anyone selling in the course of business, which includes small independents, traders posing as private sellers, and dealers who list on classifieds under a personal name. A genuine private seller is someone selling their own car.
The phrase people get stuck on is "sold as seen". It does not license a lie. A private seller who advertised a car as unrecorded, or who answered "no" when you asked about write-offs, has misdescribed the car regardless of what the receipt says. What a private seller does not owe you is volunteering the history when you never asked and the advert never claimed anything. That is the hard case, and it is why the check comes before the money.
Email beats a phone call every time. Keep it short and factual. State the date you bought the car, the price you paid, what the advert or salesperson said about its history, what the record actually shows, and that you are rejecting the vehicle as not as described under the Consumer Rights Act 2015. Ask for a full refund and give a deadline of a few working days for a reply. Attach the advert and the check.
This is the step people skip, and it is often the one that works. If you paid any part of the purchase on a credit card, section 75 of the Consumer Credit Act 1974 can make the card provider jointly liable with the dealer for a misdescription. You raise it with the card company as a claim, not a chargeback, and you send them the same evidence pack.
If the car is on hire purchase or PCP, the finance company owns it until the agreement is settled, which also makes them the supplier for consumer law purposes. Reject the car to the finance company in writing at the same time as the dealer. They have their own liability and their own complaints process, and if they do not resolve it you can take the complaint to the Financial Ombudsman Service. A finance provider facing an ombudsman file tends to move faster than a forecourt.
If the dealer refuses outright, report them through your local Trading Standards office. Selling a written-off car as unrecorded is a misleading commercial practice, and Trading Standards act on patterns. They will not usually recover your money for you, but the report matters and it strengthens what follows.
Your own money comes back through a county court claim on the small claims track. It is designed to be used without a solicitor, you can start it online through GOV.UK, and the same evidence pack does the job: the advert, the invoice, your written rejection, the dated write-off record and the reply you never got. Send a final letter before claim first, saying exactly what you want and by when. A surprising number of disputes settle at that letter.
All of the above is recoverable, but it is weeks of your life. The same information that now underpins your claim was available before you handed over any money, for £15, in about a minute. A used car check before viewing tells you the write-off category and date, outstanding finance, stolen markers, mileage at every MOT and the keeper history. Run it on the registration in the advert, before you drive to see the car, on every shortlisted vehicle.
If a seller reacts badly to being asked for the registration number, that is your answer.
Hidden finance and write-offs won't show up on a test drive.
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