You can buy insurance write-off cars in the UK from salvage auctions, specialist dealers who sell repaired write-offs, online marketplaces and private sellers. Only cars in Category S and Category N can legally go back on the road once repaired, so those are the ones most buyers are looking for.
Each route has different costs, risks and levels of protection. Here is how they compare.
1. Salvage auctions
Most insurance write-offs are sold through salvage auction companies such as Copart UK and IAA UK. Insurers pass damaged vehicles to these firms to recover some of the claim cost.
- Prices: often the lowest you will find, because you are buying the car unrepaired.
- Access: some lots are open to the public after you register, while others are restricted to trade buyers. Rules vary by auction and by lot, so check the terms before you bid.
- Extra costs: expect buyer fees, storage charges if you leave the car too long, and transport or recovery costs.
- Risk: you usually cannot test drive the car, and photos do not show everything. You take on the repair, the inspection and any surprises.
This route suits people with mechanical or bodywork experience, or a trusted repairer lined up.
2. Specialist dealers selling repaired write-offs
Some independent dealers buy Cat S and Cat N cars at auction, repair them and sell them on. You can see and drive the finished car, and the price is usually well below a comparable car with no write-off history. Ask for the following:
- Photos of the car before repair
- Itemised repair invoices and evidence of the parts used
- An independent engineer's report, particularly for Cat S
- Written confirmation of the category
A reputable dealer should be happy to provide all of this. If they are vague or hesitant, walk away.
3. Online marketplaces and classifieds
Autotrader, eBay Motors and Facebook Marketplace all carry repaired and unrepaired write-offs. Many are listed honestly, with the category in the advert. Others are not. Sellers are expected to disclose a write-off, but undisclosed write-offs do get sold, so never rely on the advert alone.
Which categories can you buy?
- Cat A: scrap only. The car should be crushed, and no parts can be reused.
- Cat B: break only. The shell must be crushed, though some parts can be reused.
- Cat S: structurally damaged but repairable. It can return to the road after a proper repair.
- Cat N: non-structural damage, repairable. It can return to the road after repair.
These categories replaced the older A to D system in October 2017. Older cars may carry the previous Cat C or Cat D markers instead. Never buy a car for road use if it is recorded as Cat A or Cat B.
Is buying a write-off a good idea?
It can be, but go in with realistic expectations:
- Lower value: repaired write-offs typically sell for noticeably less than equivalent cars, and they can be harder to resell.
- Insurance: some insurers will not cover them, and others charge more. Get quotes before you pay for the car.
- Repair quality: this matters most with Cat S, where the structure was damaged. Poor repairs can affect safety.
- Finance: lenders are often reluctant to fund these cars, so plan to pay cash.
What to check before you buy
Whichever route you choose, run a vehicle history check first. A good check should help you spot:
- Insurance write-off records (MIAFTR), including the category
- Stolen markers on the Police National Computer (PNC)
- Outstanding finance secured against the car
- MOT history from DVSA records, including mileage readings and recurring failures
- Mileage discrepancies that could point to clocking
- Previous keepers and any plate changes
You can enter the registration at motorpeek.com to see what a history check shows before you commit any money. Motorpeek is an independent service and is not affiliated with the DVLA, DVSA or any government body. No check can promise a car is free of problems, so combine it with an in-person inspection.
Practical tips for buying safely
- Match the VIN on the car, the V5C logbook and the paperwork.
- Get an independent inspection from a qualified engineer or an organisation such as the AA or RAC.
- Check the V5C for accuracy and make sure the keeper details are correct.
- Confirm the repair evidence matches the damage shown in the auction photos.
- Do not pay a deposit or hand over cash until you have verified the car's history.
- Ask for the category in writing and keep a copy.
The bottom line
Salvage auctions are the cheapest source but carry the most risk, while specialist dealers offer more convenience and transparency for a higher price. Whichever you choose, stick to Cat S and Cat N cars, insist on evidence of repairs, and verify the history independently.
Frequently asked questions
Can the public buy insurance write-off cars at auction?
Often yes, but it depends on the auction company and the individual lot. Some lots are open to registered public buyers, while others are restricted to the motor trade. Check each auction's terms, fees and collection rules before bidding.
Can you legally drive a Cat S or Cat N car?
Yes, once it has been properly repaired and is roadworthy, taxed, insured and has a valid MOT where required. Cat A and Cat B vehicles must not be put back on the road. Expect some insurers to be unwilling to cover write-offs or to charge more, so get quotes first.
How do I know if a car has been written off?
Run a vehicle history check that includes MIAFTR insurance write-off data, which records categories A, B, S and N. Compare it with the V5C, the MOT history and the seller's explanation. A physical inspection by an independent engineer adds another layer of reassurance.