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Written by Ryan Updated 13 July 2026

Write off check

Write off check

When it comes to purchasing a car, you want to make sure that what you see is what you get. A fine-looking exterior can hide the internal damages that may have occurred over time. Luckily, there is an easy way to check the history of the vehicle, and all you need is the registration number. Simply go to our home page and enter the vehicle registration number. You will then be taken to a page that will include the vehicle’s current MOT, Tax status and how much it will cost for future reference, as well as the mileage information. You can get a vehicle history check by purchasing the ‘Gold Check’. This sample report will give you an idea of what to expect.

How do we get our information?

If the vehicle in question has sustained damage over time, the information we provide comes from the DVLA, with the information having been recorded by the insurer. This unfortunately means that the amount of intel we can access on the extent of the damage, how it occurred, and how severe it was, can be limited. We also have trusted third-party connections that we can tap into if we feel like we need more information or some confirmation.

What do we mean by ‘category’?

We will be able to tell you the category of the car that you are looking at, which can be a major factor in your decision-making when it comes to purchasing a new vehicle. Vehicles that have been in an accident that has sustained any kind of damage, are allocated into categories. These categories will vary from being a complete write-off to having sustained minimal damage and are repairable. We will be able to tell you what category the vehicle falls in, which can be an instant red flag, or green light to go ahead with the purchase.

What are the categories?

There are six different categories that cars can fall under. Below is a description of each category, but keep in mind that there is a high chance that the car you are looking to purchase has already been repaired, but it is good to know the previous condition.

Why is a write off check important?

A car is a massive investment and is usually your lifeline. Therefore, if you are going to invest your hard-earned cash into a vehicle, it’s in your best interest to have an understanding of the vehicle’s history, so you can be aware of potential future issues. If the car has been professionally repaired, it should be safe to purchase from categories S, N, D and C. The price should be significantly less as compared to other cars of the same brand that have not sustained any damage, so make sure you do some research here, if the prices are similar, you’d be better off spending the money on the car that hasn’t had the repairs.

Does the seller have to supply the vehicle history?

Under UK law, if you are purchasing your car from a dealership or trader, they must provide you with a Hire Purchase Investigation (HPI) check, that will have the vehicle’s history clearly explained. If you are purchasing from a private owner, however, they have no legal obligation to provide this information to you. Although it is always recommended to have a professional assess the car before purchasing, it should be an essential part of the process if you are buying privately, as there is no law protecting you from any secrets.

Original guide plus damage checks

A write-off marker should change the evidence you demand

The original write-off guide explains the categories. Before buying a real car, use the marker to decide what repair proof, inspection and discount you need.

Write-off and salvage history checks
Write-off and salvage history checks

Evidence to collect

Ask for repair invoices, photos, inspection notes and a clear explanation of the damage. A seller should not treat a write-off marker as a minor admin detail.

  • Confirm whether the marker is Cat S, Cat N or another category.
  • Check salvage and valuation context.
  • Compare the price with clean-history cars.
  • Inspect repairs before committing.

Buyer decision rule

A repaired write-off can be acceptable for some buyers, but only when the repair evidence is strong and the price reflects future resale concerns.

Official references to verify alongside this guide

Use Car Check Experts for buyer-focused history checks, then compare key legal and road-use details with official services where they apply.

Quick answers

Can a write-off be road legal?

Some categories can return to the road after repair, but the evidence and inspection matter.

Does write-off history affect value?

Yes. It usually reduces value and affects resale confidence.