Cat S and Cat N cars: are they worth buying and how much cheaper should they be?

Published 2 November 2026

If you spend any time browsing used car listings, you will eventually come across cars described as Cat S or Cat N. These are insurance write off categories, and they sit at the centre of one of the most common debates in used car buying: is the saving worth the risk?

The short answer is that it depends on the car, the damage, the repair quality and your plans for the vehicle. The longer answer involves understanding exactly what these categories mean, how much less you should expect to pay, and how to avoid paying too much for a car that will be difficult to sell later.

This guide is written for UK private buyers and car traders. It covers the practical side of buying, pricing and selling Cat S and Cat N vehicles.

What do Cat S and Cat N actually mean?

Before 2017, insurance write offs in the UK were grouped into four categories: Cat C, Cat D, Cat A and Cat B. The system changed in October 2017, and the two categories most relevant to repairable cars are now Cat S and Cat N.

Cat S (Structural)

Cat S means the car has suffered structural damage. This includes any part of the chassis, crumple zones, suspension mounting points, floor pan or any other load bearing component. The car can be repaired and returned to the road, but the repair should have been carried out to a professional standard.

Cat S cars must pass an identity check with the DVLA before they can be used again, and the V5C logbook will be marked to show the vehicle is a Category S write off.

Cat N (Non-structural)

Cat N means the car has suffered non-structural damage. This could be cosmetic panel damage, electrical faults, a damaged bumper or bonnet, or damage to non load bearing parts. The car is repairable and does not require a DVLA identity check, but the V5C will still be marked.

Neither Cat S nor Cat N means the car is unsafe by definition. It means an insurer decided, at some point, that repairing the car was not economically worthwhile. That decision is based on the car's pre-accident value, the cost of repairs using new parts and approved labour rates, and other factors such as hire car costs during repair. A car can be written off for relatively minor damage if it is old or low value.

How much cheaper should a Cat S or Cat N car be?

There is no fixed rule, but the market tends to price Cat S and Cat N cars at a meaningful discount to equivalent cars with a clean history. The size of that discount depends on the category, the car's age, the quality of the repair and the type of buyer.

As a rough guide, many traders and buyers expect a noticeable discount for a Cat N car, and a larger discount again for a Cat S car. These are not universal. A Cat N car with minor cosmetic damage and a documented, high quality repair might sell for only a small discount below a clean car. A Cat S car with a poorly documented repair or visible signs of previous structural damage might struggle to sell at a very large discount below clean value.

The discount also widens as the car ages. A three year old Cat N car might sell at a smaller percentage discount than a ten year old Cat N car, because the absolute value is higher and the repair represents a smaller proportion of the car's worth.

For traders, the buying price is what matters most. If you buy a Cat N car at a substantial discount to clean retail and sell it at a smaller discount, you have margin. If you buy at a modest discount and try to sell at a narrow margin, you may sit on the car for months.

The hidden pricing trap: comparing like with like

One of the most common mistakes buyers make when pricing a Cat S or Cat N car is comparing it against the wrong benchmark.

Our data shows that 38% of apparent bargains disappear once you compare private cars against private cars and dealer cars against dealer cars instead of mixing them. This matters for write offs because many Cat S and Cat N cars are sold privately, often by individuals who bought them as salvage and repaired them, or by small traders who do not advertise on dealer platforms.

If you see a Cat N car listed privately and compare it to a dealer's clean car at a much higher price, you might think you are saving a large amount. But if the realistic private sale price for a clean equivalent is lower, your actual saving is smaller. That is still a saving, but it is a different proposition.

Always establish the correct benchmark before you decide whether a write off is cheap. Check what similar cars with clean histories are selling for privately, not just on dealer forecourts. Our data shows that the dealer premium for an identical car is typically 10 to 14 percent, so a private Cat N car should be compared against a private clean car, not a dealer clean car.

What to check before buying a Cat S or Cat N car

The category alone does not tell you enough. Two Cat S cars can be completely different in terms of risk and value. You need to understand the damage, the repair and the paperwork.

Ask for the repair history

A good seller will have photographs of the damage before repair, invoices for parts and labour, and details of who carried out the work. A poor seller will have no paperwork and a vague story. Walk away from the second one unless the price is low enough to absorb the risk.

For Cat S cars, ask whether the repair was carried out by a bodyshop with experience in structural work. Ask whether the car was jigged and measured after repair. If the seller cannot answer these questions, treat the car as a higher risk purchase.

Check the V5C and history

The V5C logbook will show the category marker. Check that the marker is present and matches what the seller told you. If the seller claims the car is not recorded but a history check shows otherwise, end the conversation.

Run a history check that includes salvage data. Some checks will show the date of the write off, the insurer's damage description and sometimes photographs. This information is valuable when negotiating.

Inspect the repair

If you are not mechanically confident, pay for an independent inspection. A structural repair can look fine on the outside while hiding poor welding, incorrect panel alignment or corrosion starting around repair areas.

Look for:

For Cat N cars, the checks are usually simpler, but the same principle applies. A poorly repaired bumper or bonnet can hide damage to radiators, air conditioning condensers or headlight mounting points.

Insurance and financing considerations

Cat S and Cat N cars are generally insurable, but some insurers will charge more or decline cover depending on the car and the repair. You should get an insurance quote before you commit to buying. Do not assume your current insurer will cover a recorded car at the same rate.

Financing is more difficult. Many mainstream lenders will not finance Cat S or Cat N cars, or will only do so at higher rates or lower loan to value ratios. If you need finance, check availability before you negotiate.

For traders, this affects your pool of buyers. A private buyer who needs finance may not be able to buy your Cat S car even if they want it. That reduces demand and should be reflected in your buying price.

Selling a Cat S or Cat N car later

The discount you get when buying is only half the story. You will also face a discount when you sell. The market for recorded cars is smaller, and many buyers will not consider them at any price.

When you sell, be transparent. Describe the category, the damage and the repair. Hiding the marker is illegal if you are a trader and unethical if you are a private seller. A buyer who discovers the marker after purchase can pursue you for misrepresentation.

Price the car realistically. If you bought at a significant discount to clean value, do not expect to sell at a narrow discount. The market for Cat S and Cat N cars is thin, and overpriced recorded cars sit unsold for long periods.

Our data shows that across UK listings we track, the deeper a car is priced below the typical dealer price, the faster it disappears. Cars priced 30% or more below sold about 3.1 times faster than average. This applies to recorded cars as much as any other. A Cat S car priced aggressively will sell quickly. One priced close to clean value will not.

When a Cat S or Cat N car makes sense

There are situations where buying a recorded car is a sensible financial decision.

You plan to keep the car for a long time

If you intend to run the car for five or more years, the resale discount matters less. The savings on purchase price are realised over a long ownership period, and the eventual sale price, while lower, is a smaller part of the total cost.

You can verify the repair

A documented repair with photographs and invoices reduces the risk substantially. If the car was repaired properly and you can confirm this, the main remaining risk is the resale discount, not safety.

You are buying a cheap runabout

For cars worth a few thousand pounds, a Cat N marker may reduce the price by a meaningful amount. If the car is mechanically sound and the damage was cosmetic, that is a meaningful saving on a car you may run until it is scrapped.

You are a trader with a specific buyer

Some traders specialise in recorded cars and have a customer base that accepts the trade off. If you know you can sell a Cat N car quickly at a known margin, the category is less of a concern.

When to avoid a Cat S or Cat N car

There are also clear situations where a recorded car is a poor choice.

You need finance

If you cannot buy the car outright and mainstream lenders will not touch it, the purchase becomes complicated. Specialist lenders exist but the rates are higher.

You plan to sell within a year or two

Short ownership means you will experience the resale discount without enough time for the purchase saving to offset it. You may end up losing more than you saved.

The repair is undocumented

A Cat S car with no repair history is a gamble. You cannot verify the quality of the work, and you will face the same questions from your own buyer later.

The discount is too small

If a Cat N car is priced only a little below a clean equivalent, the saving is unlikely to compensate for the reduced buyer pool and the questions you will face when selling. Walk away and find a better priced example.

How many of these cars are actually out there?

Recorded cars are not rare. On a typical day we see about 11,553 new used car listings in the UK, of which about 1,793 are from private sellers. A proportion of those private listings will be Cat S or Cat N cars, often priced below equivalent dealer cars.

Frequently asked questions

Is a Cat N car safe to drive?

A Cat N car should be safe if the repair was carried out properly. The category means non-structural damage, so the car's load bearing structure was not affected. However, the quality of the repair still matters. A poorly repaired Cat N car can have hidden issues, so an inspection is recommended.

Can I get insurance on a Cat S car?

Yes, most insurers will cover Cat S cars, but some will charge a higher premium or ask for evidence of the repair. You should get a quote before buying, because a small number of insurers will decline cover for recorded cars.

Does a Cat S or Cat N marker ever disappear from a car's history?

No. Once a car is recorded as Cat S or Cat N, the marker stays with the vehicle permanently. It appears on the V5C and on history checks. There is no legitimate way to remove it.

How much less should I pay for a Cat N car?

As a general guide, expect to pay a noticeable discount below an equivalent clean car, but always compare against the correct benchmark. A private Cat N car should be compared against a private clean car, not a dealer clean car, because the dealer premium is typically 10 to 14 percent.

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