What does “write‑off” mean?
In the UK an insurance write‑off is a formal decision by the insurer that a vehicle is not worth repairing after a claim. The decision is based on the cost of repairs compared with the market value of the car before the accident.
Insurance write‑off categories in the UK
The Motor Insurers’ Automotive Fraud and Theft Reduction (MIAFTR) scheme classifies written‑off cars into four categories. These are recorded on the DVLA’s V5C and appear on a vehicle’s history check.
- Category A – The vehicle is so badly damaged that it must be crushed. No parts can be reused.
- Category B – The vehicle can be stripped for parts but cannot be returned to the road.
- Category S (formerly “Category C”) – The car can be repaired and returned to the road, but the damage is structural and must be disclosed to any future buyer.
- Category N (formerly “Category D”) – The damage is non‑structural. The car can be repaired and used without any special disclosure, although a history check will still show the write‑off.
When will an insurer write off your car?
An insurer will typically write off a vehicle when the estimated repair cost reaches a certain percentage of the pre‑accident market value. The exact threshold varies between insurers, but a common rule of thumb is 70‑80 % of the car’s value. If the cost is lower, the insurer will usually pay for the repairs and you keep the car.
Other factors that can trigger a write‑off include:
- Severe structural damage that compromises safety.
- Extensive fire or flood damage that affects many components.
- Damage that makes the car uneconomical to repair, such as a total loss of the engine.
It is also possible for a car to be written off after a single claim if the damage is catastrophic, or after multiple smaller claims that together push the repair costs over the threshold.
What does a write‑off mean for you as a buyer?
A written‑off car can still be sold, but the category will affect its resale value and insurance premiums. Category S and N cars are often sold as “re‑registered” or “repair‑certified” vehicles, but they will carry a permanent note on the DVLA record. Category A and B cars are usually destroyed, although parts may be salvaged.
Because the write‑off status is recorded on the DVLA’s MOT and V5C history, any legitimate buyer can discover it with a proper vehicle history check. Ignoring this information can lead to unexpected repair costs, difficulties obtaining insurance, or even legal issues if the car is mis‑represented.
How a vehicle history check protects you
Running a vehicle history check on motorpeek.com will show you:
- The exact write‑off category, if any.
- Whether the car has a PNC stolen marker.
- Any outstanding finance that could be transferred to you.
- The full MOT history and any mileage discrepancies.
- Details of previous keepers and whether the car has been clocked.
By reviewing this information before you buy, you can decide whether the price reflects the risk and negotiate accordingly.
What to do if your car is written off
If your own car is written off, the insurer will usually offer a settlement based on the market value before the incident. You can accept the offer, arrange a replacement, or, in some cases, keep the car as a “salvage” vehicle and arrange your own repairs – but you will need to inform the DVLA and obtain a new V5C.
Always read the insurer’s terms carefully and consider getting an independent valuation if you think the offer is low.
Take the next step
Before you finalise any used‑car purchase, check the vehicle’s registration on motorpeek.com to uncover any write‑off history, finance alerts, or mileage issues. An informed decision can save you thousands of pounds down the line.
Frequently asked questions
What are the different insurance write‑off categories in the UK?
The UK uses four categories: A (total loss, must be crushed), B (parts can be salvaged), S (structural damage, must be disclosed), and N (non‑structural damage, still recorded).
How does an insurer decide to write off a car?
Insurers compare the estimated repair cost to the car’s pre‑accident market value, usually writing off the vehicle if repairs exceed about 70‑80 % of that value, or if damage is unsafe or uneconomical to fix.
Can I still buy a car that has been written off?
Yes, but the write‑off category will affect its price, insurance costs and resale value. A full history check will reveal the category so you can negotiate or walk away if the risk is too high.