What is a Category N write-off, and what does it do to value?

There is a common belief that Category N means light cosmetic damage and Category S means something serious. It is a reasonable assumption, it is roughly how the categories get described in conversation, and it is wrong in a way that costs people money in both directions.

The categories describe where the damage was. They say nothing about how bad it was, or what it cost to put right.

The four categories

The system is set by the Association of British Insurers in its Code of Practice for the Categorisation of Motorised Vehicle Salvage. There are four.

Category A. Scrap only. The entire vehicle must be crushed, including every part. Nothing may be salvaged.

Category B. The body shell must be crushed, but serviceable parts may be reclaimed. The vehicle never returns to the road as a vehicle.

Category S. Structurally damaged — the chassis, frame or another structural element — but repairable. It can legally return to the road once repaired.

Category N. Non-structurally damaged, and repairable. It can return to the road.

Categories A and B are ends. S and N are not.

What actually changed in 2017, and why it matters

Before October 2017, the equivalent categories were C and D, and they were defined by cost: broadly, whether repairing the car was economic relative to its value.

S and N replaced them, and the basis changed. The new categories are defined by the extent and location of damage rather than the repair bill.

That change is the source of most of today's confusion, because a lot of people are still applying C and D logic — "it was written off, so the repair must have cost more than the car" — to a system that no longer works that way.

Why Category N does not mean minor

This is the part that matters most, and it is where sellers get talked down.

Non-structural does not mean small. Category N covers damage that leaves the chassis and structural frame intact, and that includes plenty of things which are neither cheap nor cosmetic:

• Electrical faults and wiring damage
• Deployed airbags, and the associated restraint system work
• Mechanical component damage
• Water damage that has not affected the structure
• Theft recovery, where a car has been stripped internally

A car with a stripped interior and a damaged wiring loom can be Category N. A car with a scraped wing and a bent panel can be Category N. Those are very different vehicles carrying the same marker.

Meanwhile a Category S car might have had a straightforward, well-documented structural repair carried out properly by a competent bodyshop.

So the marker on its own tells you the location of the damage and nothing else. What you actually need is the story: what happened, what was done, by whom, and with what evidence.

The thing most Category N sellers do not know

For Category S, the V5C logbook is destroyed, and whoever ends up with the car has to apply to the DVLA for a replacement.

For Category N, that is not the case, and this is the detail that surprises people: a replacement V5C issued for a Category N vehicle is not annotated. The document does not say Category N on it.

Two consequences follow.

If you are buying, the logbook will not tell you. The marker lives on the vehicle's record and appears on a provenance check, which is why anyone spending real money runs one.

And if you are selling, the fact that your paperwork does not mention it changes nothing, because the buyer will find it anyway. Any professional buyer runs a check before the money moves. Declaring it up front costs you nothing you were going to keep, and not declaring it converts a straightforward transaction into a difficult conversation on your driveway.

The marker is permanent

A well-executed repair does not remove the category. It is recorded against the vehicle for the rest of its life, it will follow the car through every future sale, and no amount of good work erases it.

That is not a reason to despair. It is a reason to be realistic about the number, and to keep every document that proves the repair was done properly. On a categorised car, the repair evidence is a significant part of what you are selling.

Who decides, and can you argue with it

The categorisation is made by the insurer, or an engineer acting for them, when a claim is settled. It is a commercial and technical judgment about the vehicle, made at that moment, on the evidence in front of them.

It is worth understanding that this is a decision about an insurance claim rather than a verdict on the car. A vehicle can be written off because the repair cost sat awkwardly against its value on the day, in a year when parts were scarce and labour rates were high. The same damage on the same model in a different year might have been repaired without a marker ever appearing.

That does not mean the marker is unfair or that you can have it removed. It means the marker is a record of a commercial decision, and treating it as a statement about the car's inherent quality misreads what it is.

The registered keeper is required to notify the DVLA when a vehicle passes to an insurer following settlement of a claim, and in practice the insurer usually handles that notification. If you are the keeper and a claim on your car was settled as a total loss, that process has already happened, whether or not you were closely involved in it.

If you bought one without realising

It happens, and more often than you would expect, precisely because a Category N logbook carries no annotation.

If you have discovered a marker on a car you already own, the useful question is not how it got there but what evidence exists. Ask the seller for repair documentation if you are still in contact. Run a full provenance check so you know exactly what is recorded rather than working from a partial picture. If a dealer sold it to you without disclosing it, that is a consumer rights matter and worth taking advice on.

For selling purposes, what matters is the same as it would be for any categorised car: know the category, know what happened, and hold whatever paperwork exists. A seller who can answer those three questions is in a far stronger position than one who cannot, regardless of how they came to own the car.

So what does it do to the value?

Less than nothing on some cars, a great deal on others, and we are not going to publish a percentage.

We could give you a figure that sounds authoritative. It would be made up, it would vary enormously by model, age, category and repair quality, and you would make a decision on it. What we can tell you honestly is what drives the answer:

Which category, and why. N with documented panel damage sits very differently from N following a theft recovery.

The quality and evidence of the repair. A professional repair with an invoice trail is worth materially more than the same repair with no paperwork.

The car underneath. A desirable, in-demand model absorbs a marker better than a car that was hard to sell anyway.

Age. The same marker weighs more heavily on a nearly new car than on a ten-year-old one, because the buyer of a nearly new car usually had alternatives.

Selling one honestly

Say it early, in the first conversation. It is going to come out.

Gather the evidence before you get quotes — the engineer's report if you have it, the repair invoice, photographs, and anything showing who did the work.

Get several offers, and expect them to vary more than they would on an uncategorised car, because buyers differ a lot in how comfortable they are with markers. That variation is exactly why comparing is worth your time here.

And be wary of any buyer who quotes you a strong figure without asking which category, what the damage was, or who repaired it. They are not going to honour that number when they see the car. If you have not already read it, our comparison of the three ways to sell covers how that practice works.

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We buy categorised cars. Tell us the category and what happened when you get in touch, and the offer accounts for it from the start rather than changing later.

Tell us your registration, or see what we look for on an Evoque.