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Thinking of buying a used car bargain? Before you commit, it’s vital to know its past. This guide explains how to check if a car has been written off, what the categories mean, and whether a repaired write-off could still be worth buying.
Last updated: 22nd January, 2026

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You might come across “written-off” cars when browsing low-price car deals in the UK. These are vehicles that insurers have deemed unfit for use - in other words: they’ve had it. Or have they? The truth is, it all depends on the category of written-off car. Some can be salvaged. As much as 16% of used cars in the UK have at some point been written off! If you have the time and resources to bring a written off car back to life, you might just get a great deal.
It is absolutely essential to check if a car has been written off before you buy it. Why? Written off cars, being deemed unfit for use, clearly carry certain risks. For one, there could be serious safety concerns. Aside from that, repairing it may cost more than it’s worth and insurance can be complicated.
We’re here to help. This guide will walk you through exactly how to check if a car has been written off so you can rest assured you’re making the right purchase. We’ll also discuss the different types of written-off car and how to determine if the vehicle is a good investment.
Thinking of buying a used car? There are a few steps you should take to determine whether the car has or has ever been written off. These steps will cover all the bases so you can move forwards with confidence.
Our steps include obtaining the Vehicle Registration Number (VRN), using trusted vehicle history check tools, reviewing the report, inspecting the physical condition, and confirming insurance coverage.
Make sure to follow each step carefully and comprehensively - it will save you a lot of time, money, and stress down the line!
The VRN - the Vehicle Registration Number - is the vehicle’s ID. It’s the most important document when it comes to identifying the vehicle and retrieving an accurate historical record. The VRN is a unique sequence of letters and numbers assigned to each vehicle - otherwise called its license plate.
Luckily, it’s very easy to find a vehicle’s VRN. You can find it in two places:
Without the VRN you’ll struggle to find further information on the car. It’s essential if you are to proceed to the next steps!
Once you have the VRN, the next step is relatively straightforward. A trusted inline vehicle history check tool is the easiest way to determine whether a car has been written off. Simply enter the VRN and unlock the vehicle’s history.
There are hundreds of online vehicle history check tools in the UK. Some better than others. Some paid, some free. Here’s a list of some of the top tools:
Before you use any vehicle history check tool, however, make sure the site is reliable and legitimate. They often involve handing over your email address, so always be careful!
A legitimate vehicle history report should tell you everything you need to know about the car’s history. You’ll need to examine it to see if the car has been written off.
Most vehicle history checks include:
Go through the history report with a fine-toothed comb and look for anything that indicates a write-off.
An official vehicle history report should tell you whether the car’s ever been written off. However, we always recommend a comprehensive physical inspection, too. To be on the safe side, combine both approaches for a fuller picture.
When you’re inspecting the car, look out for:
Note: physical damage isn’t always easy to spot if you’re not a trained professional. It’s a good idea to have a mechanic inspect the car on your behalf; they’ll be able to find any hidden defects or damage that could seriously affect the car’s safety and value.
Every car on the roads of the UK must be covered by insurance. If the vehicle in question isn’t covered, or is indeed uninsurable, that’s a big red flag. You can do two things to check the car’s insurance coverage:
Remember: always conduct these checks before you buy the car. You’ll save yourself a lot of stress later on!
A write-off doesn’t have to mean the end of the road for a car. True, buyers should be careful when buying any kind of written-off car. But to make a good financial decision, it’s still important to understand the different types - or categories - of written-off cars.
There are four write-off categories in the UK: A, B, S, and N. All of these either temporarily or permanently take a car off the road and Insurers use these to determine the extent of the damage.
Here’s a handy breakdown of each category:
A Category A write-off indicates a vehicle has been deemed too damaged to be repaired. It cannot under any circumstances enter the roads again.
Category A vehicles are usually:
Cat A should be a glaring red flag for all buyers: this vehicle cannot be repaired. However, if you own a Cat A car, you could still get some money for it by selling it for scrap!
Like Category A cars, Category B vehicles are beyond repair and cannot be driven under any circumstances. However, the damage may not be quite as total as with a Category A car.
For example, a Cat B car may be wrecked to the eye but still contain undamaged parts like engines, transmissions, or panels. In this case, the vehicle is most often broken down and the parts sold.
The important thing is that Category B cars can’t be driven or repaired.
Category S vehicles have sustained serious structural damage but can be repaired and returned to the roads. However, any Cat S car will require significant repair work.
While the inner parts are intact, a Cat S’s “structural damage” means that its frame, essential for safety, is damaged. Driving any such car without serious structural repairs would be very dangerous - and of course illegal.
Bringing a Category S car back to life requires extensive repairs, re-registration with the DVLA, and a new MOT. It’s not impossible, but buyers should be aware that this can be a costly undertaking.
Category N cars have non-structural damage. The vehicle’s frame and safety features may be intact, but there may be:
Cat N cars are the easiest to repair and return to the road. However, just like Cat S cars, they will require careful inspection before doing so and will likely have a much lower resale value.
Award-winning automotive entrepreneur, tech innovator, and founder of Car.co.uk, NewReg.co.uk & Recycling Lives.
If you’re considering buying a used car, including a written-off vehicle, we always advise customers use a reputable car trader. These services provide the quality assurance you need to buy and drive with confidence. Buyers can enjoy peace-of-mind knowing their purchase is backed by professional mechanics and a seamless buying process - no hassle, no safety concerns.
Safety is always the first concern. Buying or driving a written-off car carries enormous safety risks as well as legal ramifications. Even a Category N write-off requires repairs and inspections before it can hit the roads again.
But safety isn’t the only reason to check if a car has been written off:
It is not illegal to buy a written-off car. In some cases it might even be tempting. After all, they’re often significantly cheaper than roadworthy vehicles. However, there are, of course, pros and cons to buying a Cat S or Cat N car.
There are some cases in which buying a written-off car is worth it: perhaps you’re on a budget or a particular car has sentimental value. But you should always be aware that buying such a vehicle comes with heightened risk, more expense, and much more complicated insurance processes.
When browsing used cars, you’ll often find what seems like a great deal on a Cat S or Cat N vehicle. But the truth is, these cars come with significant risks - both personal and financial.
Before you go ahead and buy such a vehicle, take the time to consider these risk factors (and invest in a professional inspection if necessary):
It’s not always obvious if a car has been written off in its past if it’s been professionally restored. However, many buyers are wary even of these kinds of vehicles - and understandably so. So if you want to avoid buying a written-off car altogether, there are six steps you can take to protect yourself:
It depends on the write-off category of the car. Category A and Category B cars cannot be insured because they can’t, under any circumstances, be returned to the roads. Category S and N cars, however, can be insured and driven provided they professionally repaired and issued a new V5C.
Yes. But exactly how you sell the car depends on the write-off category. You can sell Category A as scrap and Category B cars for parts only - you can’t sell them as roadworthy cars. You can sell Cat S and N cars as either repaired write-offs or as repairable write-offs. However, their category must be declared.
It’s entirely legal to buy and drive a Cat S or N car provided it’s been professionally repaired and declared roadworthy. However, it’s illegal to buy and drive a Cat A or B vehicle. Even for Cat S and N cars, you must notify the DVLA of its status.
Yes, as long as it’s a Category A or Category B written-off car. You must professionally repair the car and have it declared roadworthy before putting it back on the road. Category A and B vehicles cannot be put back on the road.
It depends on the extent of the damage. If the car has been declared Category A or Category B, then you can’t repair it. It can be sold for parts or scrap. You can repair a Category S or N vehicle.
Not as long as it’s written off. However, it could go on to pass an MOT once repaired provided it’s a Category S or Category N write-off - meaning the damage can be safely repaired. Even after repairs you will have to pass an MOT before driving it. Cat A and B vehicles cannot pass MOTs.
Yes. It’s possible to buy a Category S or N write-off vehicle, repair it, and return to the roads (although not a Cat A or B vehicle). However, be aware that buying a written-off car comes with safety and financial risks. If you do, always buy from a reputable trader.

