TL;DR
The DVLA’s free vehicle enquiry won’t tell you if a car has been written off. To check write-off history, you need a vehicle history check that accesses the MIAFTR (Motor Insurers’ Anti-Fraud and Theft Register) database. Write-offs fall into four categories: Cat A and Cat B (should never return to the road) and Cat S and Cat N (repairable and legally resaleable, but permanently marked).
Every year, hundreds of thousands of vehicles in the UK are declared insurance write-offs. Some are genuinely beyond saving. Others have relatively minor damage that an insurer simply deemed uneconomical to fix.
The problem? A repaired write-off can look identical to a clean-history car. Without checking, you could pay full market value for a vehicle worth significantly less, or worse, one that’s been poorly repaired and isn’t safe to drive.
Here’s how to find out what you’re actually buying.
What does “written off” actually mean?
A car is written off when an insurance company decides the cost of repairing it exceeds a certain threshold compared to the car’s value. This doesn’t always mean the car is destroyed. It means the insurer has done the maths and decided it’s not worth their money to fix it.
A £30,000 car with £10,000 of damage might get repaired. A £3,000 car with £2,000 of damage probably won’t. The write-off decision is financial, not always a reflection of how badly damaged the vehicle is.
Once a car is written off, the insurer must notify the DVLA, and the vehicle’s record is updated on the MIAFTR database, which logs insurance write-off records across the UK.
The four UK write-off categories explained
Since 2017, insurance write-offs in the UK have been classified into four categories. Understanding the difference between Cat S and Cat N (and their more serious counterparts) is essential before you buy any used car.
Category A (Scrap)
The most severe classification. The entire vehicle, including all parts, must be crushed. Nothing can be salvaged or resold. You should never encounter a Cat A car for sale.
Category B (Break)
The body shell must be crushed, but usable parts (engine, gearbox, electronics) can be stripped and resold. The car itself must never return to the road.
Category S (Structural)
The vehicle has sustained structural damage (chassis, frame, crumple zones) but can be professionally repaired and returned to the road. The Cat S marker is permanent.
Category N (Non-structural)
Damage is non-structural (body panels, electrics, lights, brakes) but was uneconomical for the insurer to repair. Cat N cars can be fixed and resold, though the marker stays on record permanently.
Good to know
Cat S and Cat N replaced the older Cat C and Cat D classifications in 2017. If you’re looking at an older vehicle, its history might reference the previous system. The gov.uk guide on car insurance write-off categories explains the current classifications.
How to check if a car has been written off
There are a few routes, but they don’t all give you the same information.
The free DVLA vehicle enquiry
The DVLA’s free vehicle enquiry service lets you check basic details like tax status, MOT due date, and engine size. It’s useful, but it will not tell you whether a car has been written off. Write-off data simply isn’t included.
MOT history
Checking a car’s MOT history on gov.uk can sometimes hint at problems. A long gap in MOT tests followed by a sudden re-test might suggest the car was off the road for repairs. Advisory notes about structural issues or welding work can also be telling. But MOT history alone won’t confirm a write-off.
The V5C logbook
If a car has been written off and the insurer notified the DVLA, the V5C registration document should be updated. However, there can be delays in reporting, and a missing or recently re-issued V5C on a used car should raise questions.
A vehicle history check
The only reliable way to check if a car has been written off is through a vehicle history check that accesses the MIAFTR database. This is the register where insurers log every write-off, including the category, the date, the insurer involved, and (where recorded) the damaged areas of the vehicle.
This data isn’t publicly available for free. Services like CarVerify pull from MIAFTR, alongside DVLA, police, and finance databases, to give you a complete picture in one report.
Can you check if a car is written off for free?
Not fully. The DVLA’s free tools cover tax and MOT but not write-off status. Some websites advertise “free write-off checks,” but these typically only show partial data or require you to pay for the full result.
The MIAFTR database, which holds the actual insurance write-off records, is a paid data source. Any service providing genuine write-off category data is paying for that access and passing the cost on to you.
A basic vehicle history check costs around £10. Given that a hidden write-off can knock 20% to 30% off a car’s true value, it’s one of the cheaper forms of insurance you’ll buy.
Check any car’s write-off history in seconds
A CarVerify report checks the MIAFTR database, outstanding finance, stolen markers, mileage discrepancies, and MOT history. All from a single reg plate lookup, backed by a £30,000 data guarantee.
Should you buy a Cat S or Cat N car?
It depends. A write-off marker isn’t automatically a reason to walk away, but it is a reason to ask more questions and adjust your expectations.
Potential advantages
- ✓
Lower purchase price (typically 20% to 30% below clean-history equivalents)
- ✓
Can be a good deal if professionally repaired with full documentation
- ✓
Cat N damage is often cosmetic or electrical, not structural
Risks to consider
- ✗
Insurance premiums are often higher for previously written-off vehicles
- ✗
Resale value will always be lower, and some buyers won’t touch them
- ✗
Poor-quality repairs can cause safety issues that aren’t visible to the untrained eye
- ✗
Cat S cars have had structural damage, which can compromise crash protection if not properly fixed
If you’re considering a Cat S or Cat N car, get an independent inspection from a qualified mechanic before committing. Ask the seller for full repair invoices and photographs of the work carried out. The gov.uk guide to buying repaired write-offs is worth reading before you view any such vehicle.
Red flags when buying a used car
A write-off check is one piece of the puzzle. Here are other warning signs that something might not be right.
- ✗
Mismatched paint or panel gaps: uneven colour, overspray on rubber seals, or panels that don’t sit flush could indicate crash repair
- ✗
Reluctance to share history: if the seller can’t or won’t provide service records, MOT certificates, or repair invoices, that’s a concern
- ✗
Recently re-issued V5C: a brand-new logbook on an older car might mean the car changed hands through an insurer
- ✗
Price too good to be true: if it’s significantly below market value, there’s usually a reason
- ✗
Multiple recent keepers: three owners in two years on a standard car is worth questioning
The RAC’s guide to insurance write-offs has useful advice on what to look for during a physical inspection.
Your rights if you buy a write-off without knowing
Under the Consumer Rights Act 2015, if you buy from a dealer and the car’s write-off history wasn’t disclosed, you may have grounds to reject the vehicle or claim a partial refund. The car must match its description, and an undisclosed write-off arguably fails that test.
Private sales offer less protection. The legal principle of “buyer beware” applies more heavily, which is exactly why running a vehicle history check before handing over any money matters so much.
Citizens Advice can help if you believe you’ve been sold a car with an undisclosed write-off history.