A Cat N car is one that an insurer has written off but that can be repaired, because the damage did not affect the structure. The N stands for non-structural. The car can legally be repaired and driven again, but repairing it does not remove the write-off record, so expect it to follow the car.
- Cat N means repairable, non-structural damage. GOV.UK describes it as a vehicle that can be repaired following non-structural damage and used again once it is roadworthy.
- It is a write-off label, not a damage report. The insurer decided paying out was a better deal than repairing, so a Cat N car might have had a lot of cosmetic damage or surprisingly little.
- The current categories started in October 2017. A, B, S and N replaced the old A, B, C and D. The old C and D were cost-based. S and N are based on the type of damage.
- Free government checks do not show it. The DVLA vehicle enquiry and MOT history say nothing about write-off status, so you need a vehicle history check by registration.
- Tell your insurer. Answer their questions honestly about write-off history, get quotes before you buy, and ask the seller for repair evidence.
What Cat N Means
Insurers sort total-loss vehicles into four categories under an industry code of practice run by the Association of British Insurers (ABI). Since 1 October 2017 those categories are A, B, S and N. GOV.UK sets them out like this:
- Cat A: cannot be repaired. The entire vehicle has to be crushed.
- Cat B: cannot be repaired. The body shell has to be crushed, but other parts can be salvaged.
- Cat S: can be repaired following structural damage.
- Cat N: can be repaired following non-structural damage.
Cat N and Cat S are the two that can return to the road. Cat N is the less serious of the pair, because the frame, chassis and safety structure were not damaged. For the full ladder, see our guide to write-off categories explained.
What Counts as Non-Structural Damage
Non-structural means the damage was to parts that are not part of the car's load-bearing frame or crash structure. Typical examples are:
- bolt-on body panels such as wings, doors, bonnet and boot lid
- bumpers, lights and grilles
- glass and trim
- interior damage, as long as the structure is untouched
- cosmetic damage from theft or vandalism
- hail damage across the panels
The line between structural and non-structural comes from the ABI code, which asks whether key structural components were damaged. If they were, the car is Cat S. If they were not, it can be Cat N.
Here is the part buyers miss. Non-structural does not mean minor. A car can take a lot of damage to bolt-on parts and still be Cat N. Equally, the airbags, wiring looms and sensors can be affected without the structure being touched. So the label tells you what was not damaged, not how much repair was done.
How a Car Becomes Cat N
Insurers do not write a car off simply because it is badly damaged. They do it because of the sums. Roughly, the insurer weighs the cost of repair, plus things like hire car costs and storage, against what the car is worth and what it can be sold for as salvage. If paying out the market value and selling the wreck looks cheaper than repairing, the car is declared a total loss.
A DVSA consumer guide on GOV.UK describes Cat S and Cat N as a constructive loss: the vehicle could be repaired, but the cost of doing so would exceed its replacement value. That is why older and cheaper cars are written off for damage that would be repaired without question on a newer one. A damaged bumper, wing and headlamp on a ten-year-old hatchback can easily cost more than the car is worth.
Once the insurer has decided on a total loss, the car is categorised by the damage. A non-structural repairable car becomes Cat N.
Cat N vs Cat S
The difference is the structure. Cat S means the frame, chassis or other load-bearing parts were damaged. Cat N means they were not. Cat S cars need more careful inspection because a poor structural repair can change how the car behaves in a second crash.
Both can be driven again once repaired to a roadworthy condition. We cover the comparison properly in Cat N vs Cat S, and the structural side in our Cat S guide.
Cat N and the Old Cat D
Before October 2017 the categories were A, B, C and D. C and D were based on cost: roughly, C meant repair cost more than the car was worth, and D meant it was repairable but the insurer chose not to repair. The ABI replaced them with damage-based categories, which give a better idea of why a car was written off.
Cat N is often treated as the modern Cat D, but they are not the same. Cat D did not say whether the damage was structural. Cat N does. Cars categorised before the change generally keep their old label, so you will still see Cat D on older cars. Our guide to Cat D and Cat C explains the old system, and Cat A and Cat B covers the two categories that never go back on the road.
Will It Show on the V5C or DVLA Records?
Do not count on it. Here is what GOV.UK says, and what it does not.
- For a Cat N car that its owner keeps after a claim, GOV.UK says the owner can keep the existing log book (V5C).
- For Cat S, the owner sends the complete log book to the insurer and applies for a duplicate, and GOV.UK says DVLA will record the vehicle's category in the log book.
- A car's V5C can be replaced, lost or simply not mention a category, so a clean-looking log book does not prove a clean history.
The free DVLA vehicle enquiry shows details such as make, colour, tax and MOT status. It does not give write-off status. That is why the record you want sits with the insurance industry's data, and you reach it through a vehicle history check, covered below.
MOT and Roadworthiness
A repaired Cat N car still needs an MOT like any other, once it is old enough. There is no separate test for write-offs. The MOT checks the car against a fixed roadworthiness list on the day. It does not judge how well a previous repair was done, and it does not record a write-off. A pass is useful but it is not a clean bill of health.
GOV.UK's guide to buying a repaired write-off advises checking the MOT history if the car is over three years old. The check is free and shows past failures, advisories and mileage readings.
Insurance
Tell your insurer if a car has a write-off history, and answer their questions honestly. The DVSA guide on GOV.UK warns that if you fail to, your insurer can reject a claim on the grounds of non-disclosure. Insurers differ: some quote normally, some add a loading, and a few decline. The same guide recommends getting an insurance quote before you buy, and that is sensible advice. Our guide to Cat N car insurance goes into premiums and how to shop around.
What It Does to Value
A Cat N car is normally priced below a clean equivalent, and it tends to stay that way. The write-off record does not go away after repair, so the next buyer is likely to ask for the same discount from you. How big the gap is depends on the model, age, the repair evidence and the buyer. We would not quote a fixed percentage, and you should be wary of any seller who does.
A sensible approach is to look at similar clean cars, ask what the discount reflects, and make sure it is more than a token amount. Whether it is worth it for you is a separate question, which we answer in is it worth buying a Cat N car.
How to Check If a Car Is Cat N
The free government services cover tax, MOT and basic vehicle details. They do not show whether a car has been written off. The DVSA guide to buying repaired write-offs on GOV.UK points buyers to a private history check for this, which it says can reveal theft, outstanding finance, mileage discrepancies or a previous write-off.
A vehicle history check run on the registration draws on sources such as DVLA, DVSA and insurance write-off records (ours come through Experian), and typically shows:
- whether the car has a write-off record and which category it holds
- the date of loss, where the record holds it
- outstanding finance, which matters whatever the damage history
- stolen status, previous plates and mileage records, so you can compare them with what the seller says
If the record holds no write-off marker, it tells you nothing was found in the data sources it checks. It is a useful signal, not a promise, so still look over the car.
You can run a write-off check on any registration, or start with the free check to see what is held on the car. For a step-by-step walk through, see how to check if a car has been written off, and for what a free option does and does not cover, read our free write-off check guide. Do it before you travel to view the car.
What to Ask the Seller
If the history shows Cat N, or the seller tells you it is, ask:
- When was it written off, and what was damaged? Get a straight answer, not "just a scratch".
- Who repaired it, and where? A named bodyshop is better than "a mate".
- Can I see the invoices and before and after photos? A seller with a documented repair should have them.
- Were the airbags deployed, and have they been replaced? Ask for the invoice for the parts.
- Was it bought back by the previous owner, or sold at auction? This tells you how many hands it passed through.
- Will you let an independent inspector look at it? A refusal tells you something.
The DVSA guide also advises buyers to get an independent expert's report or an engineer's inspection to identify any structural damage. At the viewing, look in daylight for uneven panel gaps, paint that does not match, overspray on rubber seals, and a dashboard airbag warning light that behaves oddly.
Frequently Asked Questions
What does Cat N mean on a car?
Cat N means an insurer wrote the car off but it can be repaired, because the damage was non-structural. The car can legally return to the road once it is repaired to a roadworthy condition, and repairing it does not remove the write-off record.
What is Cat N damage?
It is damage to parts that are not part of the car's load-bearing structure, such as body panels, bumpers, lights, glass and trim. It can still be extensive and expensive. The category tells you the structure was not damaged, not how much repair was needed.
Does a Cat N car affect insurance?
Declare it and answer your insurer's questions honestly. It can affect your premium or whether a particular insurer will quote. Some treat it like any other car, some load the price and some decline. Get quotes before you buy. See our Cat N insurance guide.
Is Cat N the same as Cat D?
No. Cat D was a cost-based category used before 1 October 2017 and did not say whether the damage was structural. Cat N is damage-based and confirms the damage was non-structural.
Is Cat N better than Cat S?
Cat N is the less serious of the two because the structure was not damaged. Cat S involved structural damage, so a careful inspection matters more. Both are write-offs, and repair does not remove either record. See Cat N vs Cat S.
Can I find out for free if a car is Cat N?
Not through the government services. The DVLA vehicle enquiry and MOT history do not show write-off status. A free check shows what is held on the car, and a full vehicle history check is how you see the write-off category.
Can a Cat N car be taxed and MOT'd?
Yes. Once it is repaired to a roadworthy condition it can be taxed, insured and driven like any other car, and it needs an MOT when it is due.
Does a Cat N marker ever come off?
Repairing the car does not remove it, which is why it can affect resale value long after the repair.