M.TaimooR January 31, 2025
UK Car Write-Off labels Cat A, Cat B, Cat S and Cat N can be confusing when you’re shopping for a used car. These insurer codes tell you how serious the damage was, whether repairs were permitted, and how the label will affect safety, legality and resale value. This guide breaks down each category in plain English, highlights what to check before you buy, and helps you decide when a write-off is still a smart purchase.
Category A car means the car is badly damaged due to fire or severe accident and cannot be reused. This type of car must be crushed, and even its parts cannot be salvaged. Their parts cannot be reliable. Cat A vehicles cannot be sold or repaired.
For example, a Ferrari 458 was classified as cat A as it was burnt in a massive fire in London. Its internal structure was badly damaged, and it became unroadworthy. So if you see Cat A, walk away; it’s a scrap.
These cars suffer from irreparable damage. Unfortunately, these cars cannot go on the road again. The parts, such as the engine, gearbox, and interiors, can be reused, but the shell must be crushed. The chassis and main body must be crushed as they have suffered severely and cannot be reused.
For example, a BMW M3 was classified as Cat B after a major crash during a track day. Its engine and sports seats were sold to the person interested in purchasing spare parts. And its shell was crushed. Cat B cars can never legally return to the road; only parts can live on.
Cat S means structural damage. The key parts of a car, like the chassis or frame, get damaged but can be repaired. After being repaired, the car can be returned to the road. However, a proper inspection is required from the engineer before taking the cat’s car to the road.
You are also supposed to re-register your vehicle with DVLA. So, be careful if you plan to purchase the category S vehicle because structural damage cannot be spotted easily. Make sure professionals repair the car and check the photos before and after.
Cat N covers non-structural damage, such as bumpers. They might have sustained cosmetic damage. These cars can be repaired and reused legally. However, the driver and the DVLA agency must know that the vehicle has been written off before.
To sum it up, knowledge about all the categories can help you choose the best vehicle and walk away from the written-off vehicles. Inspect the vehicle properly before making a deal. Please do not rush to purchase it; make sure an engineer has inspected it on your behalf before you lock a deal. You must have an idea of what Cat A, B, S, and N are.
Before buying any used car with a write-off label, check out our car inspection checklist to ensure you’re not missing anything important.
What do Cat A, B, S, and N mean for cars?
Cat A- scrap only, not roadworthy, not salvageable
Cat B- irreparable damage, body must be crushed, parts can be reused
Cat S- structural damage, repairable, can get back on the road
Cat N- Non-structural damage, cosmetic or electrical issue, can be repaired
Can I legally drive a Cat S or Cat N car?
Yes, if the vehicle is repaired professionally and passes the roadworthiness test, like MOT, it can be driven legally on the road.
Is it safe to buy a Cat S or Cat N car?
Yes, both of them are safe to purchase, but only under some specific conditions.
Will a Cat S or Cat N car cost more to insure?
Yes, the insurance providers may charge higher or provide limited coverage due to the added risk for already written-off vehicles.
Will a Cat S or Cat N car lose value faster?
Yes, after repairing, Cat S or Cat N loses their resale value. They can lose 20-30% resale value.
Still searching for a used car that’s safe, inspected, and road-ready?
Check out our trusted used cars for sale in London quality guaranteed by experts at Trade London Motor Sports.
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