Cat N = non-structural damage. The chassis is fine. The value isn't.
Category N is the insurance write-off marker for cars with non-structural damage — panels, lights, electrics, suspension components, airbags, interior. The chassis and safety cell are intact. Cat N cars are legal to return to the road after repair and a new MOT, but they must be declared. Typical Cat N cars sell at 20–40% below the equivalent non-written-off market price.
The Category N marker comes from insurance MIAFTR records — commercial data from Experian, not DVLA. Every paid tier from £4.99 reveals whether this car has a Cat N write-off on file. The free check below returns DVLA + MOT as supporting context.
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Cat N data is in paid tiers. Free tier shows DVLA and MOT only. Free PDF report by email.
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Cat N is the Association of British Insurers' classification for a vehicle that has been declared a total loss because of non-structural damage. It was introduced on 1 October 2017 and replaces the older Cat D classification. A Cat N car has been repaired and is legally back on the road — but its history sits on MIAFTR (the Motor Insurance Anti-Fraud and Theft Register) for the rest of its life and will appear on every paid history check from now on.
The ABI's Salvage Code defines non-structural damage as damage that does not affect the vehicle's load-bearing or safety-critical structure. Typical Cat N causes include:
The deciding question is not "is it expensive to fix?" but "is the repair structural?". An engine replacement on a £6,000 hatchback might write the car off economically but stay non-structural; a small but deep impact to a chassis rail will be Cat S even if the parts cost is lower.
Insurers compare the cost of repair against the vehicle's pre-accident market value plus a margin for assessment, hire car and administration. When repair cost crosses the threshold the car is declared a total loss — but if the damage is non-structural the salvage value is high (the car can be repaired and resold) so the insurer typically sells it through a salvage auction rather than scrapping it. The new owner repairs it and the car returns to the market, this time carrying the Cat N marker.
It can be — provided the repair has been done by a competent body-shop and you have evidence. The questions to ask the seller are:
A clean answer set, an independent pre-purchase inspection, and a price that reflects the history are the three things that make a Cat N purchase reasonable.
Cat N cars are typically more expensive to insure than equivalent unwritten-off cars and some insurers will decline cover. Always quote the specific registration before committing — premium quotes for a clean equivalent will not apply. Resale value is reduced; the marker stays on the car for the rest of its life and will appear on every future paid check.
The free DVLA + DVSA data on this page does not return the Cat N marker — write-off categories are licensed from the ABI and are part of SortedCheck's Protected paid tiers. Use the free check to confirm the basic vehicle facts, then run a Protected check before paying any deposit.
Functionally similar but not identical. Cat D was retired on 1 October 2017 and replaced by Cat N. The criteria are similar — non-structural damage repaired and back on the road — but Cat N applies to write-offs from October 2017 onwards. Cars written off before that date keep their original Cat D marker.
Yes. There is no special MOT requirement after a Cat N repair — the standard MOT applies. Pass or fail is determined by the actual condition of the car on the day of the test, not its category.
The discount varies by age, make, model, severity of original damage and quality of repair. Get a current trade-in valuation for the same model in clean condition and compare against asking prices for Cat N examples. The discount is real and the seller should expect to be challenged on it.
No. Once a vehicle is logged on MIAFTR the entry is permanent. Every future buyer running a paid history check will see it.
A car where the insurer declared repair uneconomical, but the damage was non-structural — e.g. body panels, lights, trim, electronics, airbags or water damage. The chassis, roof, floorpan and safety cells were undamaged.
Not inherently — if the repair was done properly by a competent bodyshop. But there's no required post-repair structural inspection for Cat N, so repair quality varies. An independent pre-purchase inspection is strongly recommended.
Yes, but some insurers decline and others charge 10–25% more. Always declare the Cat N status on your policy — if you don't, the insurer can void your cover after an accident.
Yes — the MOT is a roadworthiness test, not a history check. A properly repaired Cat N passes normally.
Typically 20–40% below the non-written-off market price for the same make, model, year and mileage. Sellers should disclose it; buyers should discount accordingly.