What do Cat A, Cat B, Cat S and Cat N write-offs mean?

Why insurers write vehicles off

An insurer may declare a van a total loss because it cannot be safely repaired, or because repairing it is not economical. The decision is not simply whether the repair bill exceeds the van’s market value: insurers also consider associated costs and the likely value of the damaged vehicle. An older van can therefore be written off for damage that is repairable.

In October 2017, Category S and Category N replaced Category C and Category D for newly classified repairable write-offs. The newer categories distinguish structural from non-structural damage rather than focusing on repair economics. Older Cat C and Cat D records still appear on vehicle histories; they do not translate directly into S or N. A category describes the recorded damage classification, not the quality of any subsequent repair.

Cat A and Cat B: not for road use

Category A means the entire vehicle must be scrapped, with no parts salvaged for reuse. This category applies to vehicles assessed as unsuitable even for parts recovery. A Cat A van is not a repair project and must never return to the road.

Category B also means the vehicle must not return to the road, but suitable parts may be recovered. The body shell must be destroyed through the appropriate disposal process. Parts from a Cat B vehicle may have a legitimate use, but a complete Cat B van advertised as a usable work vehicle is a reason to stop and investigate, not an opportunity to buy cheaply.

Cat S: repairable structural damage

The S stands for structural. A Cat S van has suffered damage to part of its structure, such as the chassis or a structural section of the body. It can be repaired and returned to the road, but the category alone tells you neither how extensive the damage was nor how well it was put right.

Ask for photographs taken before repairs, an itemised repair invoice and any measurements or engineer’s report available. An independent inspection by someone experienced in structural repairs is particularly worthwhile. For a commercial vehicle, correct alignment and sound repairs matter when carrying loads as well as when driving empty.

Check the DVLA paperwork too. Current GOV.UK guidance requires the keeper to send the original V5C to the insurer and apply for a replacement for a Cat S vehicle; the category is recorded on the replacement. This paperwork is not an approval of the repair. The van must still meet normal roadworthiness, MOT, tax and insurance requirements.

Cat N: non-structural does not mean minor

The N stands for non-structural. A Cat N vehicle has not been classified as having structural damage, but it may still need substantial repairs. Damage can involve body panels, electrical systems or mechanical components. Safety-related parts, including steering, brakes and suspension, can also be affected without the vehicle receiving a structural category.

Do not accept ‘only cosmetic’ without evidence. Find out precisely which components were damaged and replaced, and check that warning lights, safety systems and electrical equipment operate correctly. Cat N does not normally require the same replacement-V5C process as Cat S, but repairs and roadworthiness still need checking. A valid MOT is useful evidence, not a guarantee of repair quality.

Does a repaired write-off make financial sense?

A repaired Cat S or Cat N van may cost less than a comparable vehicle without a write-off record. That saving needs to cover the additional uncertainty, inspection costs and possible effect on resale. The history remains relevant after repair, and some future buyers or dealers may not want the vehicle.

Insurance availability, premiums and policy conditions vary. Give the insurer the registration and known write-off category, explain your intended business use and obtain a quote before committing. Do not assume cover will be refused or that it will necessarily be more expensive. If you need finance, check the lender’s position too. For a working van, potential downtime can outweigh a modest purchase-price saving.

What a van history check can tell you

A paid vehicle history check is an important starting point, but providers differ in their coverage and guarantees. Check what the report includes and match the registration and vehicle identification number to the van and its paperwork. Useful checks include:

• Recorded insurance write-offs and their categories.
• Outstanding finance, which may affect ownership and could put the vehicle at risk of repossession.
• Stolen-vehicle records.
• Mileage discrepancies and identity changes requiring further investigation.

Check the evidence, not just the seller’s reassurance

Use official GOV.UK vehicle details and MOT history alongside the paid report. Compare mileage entries, recurring advisories and dates with service and repair records. No database captures every accident or privately funded repair, so a clear history report does not prove a van has never been damaged.

Ask the seller to put the known write-off status and repair information in writing. Check panel alignment, uneven tyre wear, water ingress and warning lights, but use an independent specialist where repair quality is uncertain. Buying from a dealer gives different consumer protections from buying privately; business purchases can differ again. Seek Trading Standards, Citizens Advice or professional legal guidance if you are unsure of your position.