Vehicle Write-Off Categories A, B, S and N: What Fleet Managers Must Do

Collisions and damage claims end with a phone call from the insurer and a letter with a category on it. For a fleet, what happens next depends entirely on which of the four write-off categories the vehicle lands in - and on a DVLA notification duty that sits with the keeper, not the insurance company, backed by a £1,000 fine. The categories changed names in 2017 and the old C and D labels still circulate, so start with the current set of four.

The four categories

The category decides whether the vehicle can ever go back on the road:

• Category A. Cannot be repaired. The entire vehicle has to be crushed - nothing comes back, not even parts.
• Category B. Cannot be repaired. The body shell has to be crushed, but other parts can be salvaged from it.
• Category S. Can be repaired following structural damage. The vehicle can be used again once repaired to a roadworthy condition. (This is the old Cat C: structural repair required.)
• Category N. Can be repaired following non-structural damage. Again, usable once repaired to roadworthy condition. (The old Cat D.)

The S and N distinction is about whether the structure - chassis, crumple zones, the load-bearing shell - was damaged. For commercial vehicles this matters enormously: a Cat S box van needs its structure assessed and repaired properly before it carries another pallet, while a Cat N might be cosmetic or mechanical. Either way, “roadworthy condition” is the legal threshold for reuse, and for a fleet that means a documented, quality repair - not the cheapest panel-beating that makes the dent disappear.

The process duties

When a vehicle is written off, the insurance company pays you the current value of the vehicle instead of the repair cost, and will usually arrange the scrapping. Your side of the process:

1. Take the registration number off the vehicle if you want to keep it - critically important for fleets with cherished or sequenced plates.
2. Send the V5C log book to your insurance company, keeping the yellow “sell, transfer or part-exchange your vehicle to the motor trade” section.
3. Tell DVLA the vehicle has been written off. You can be fined £1,000 if you do not. Online, you need the insurance company’s name and postcode, the registration number, and the 11-digit reference from the yellow V5C section; the online service runs 7am to 7pm. Afterwards, destroy the yellow section - and expect DVLA’s confirmation letter plus a vehicle tax refund for any full months left, with Direct Debit cancelled automatically.

The notification duty is the keeper’s. In a fleet with dozens of claims a year, build it into the claims workflow as a checkbox, not a memory.

Keeping a Cat S or N vehicle

Fleets often want the vehicle back, particularly low-mileage vans with cosmetic damage where the insurer’s repair-cost maths undervalues a reliable asset. If you keep a category N or S vehicle, the insurer pays out and sells the vehicle back to you.

The paperwork differs by category. To keep a category S vehicle you must send the complete log book to the insurance company and apply for a free duplicate log book using form V62; DVLA records the vehicle’s category in the log book. For a category N vehicle you can keep the log book you have.

Then the operational realities bite. The category is recorded and visible to future buyers and some insurers, so residual values fall. Insurance on a previously written-off vehicle can cost more or come with conditions. And the repair must genuinely return the vehicle to roadworthy condition - a structural repair on a Cat S van needs proper measurement and documentation, because if that vehicle is later involved in another collision, the repair quality becomes your liability story.

Fleet policy points

Decide your categories policy before the next claim, not during it. Some fleets take the payout on any S or N vehicle and move on, preferring clean title and clean resale. Others keep N vehicles with minor damage where the economics are obvious. Either is defensible; what is not defensible is an ad-hoc decision per claim, inconsistent DVLA notifications, or repaired vehicles returning to service without a documented roadworthiness check.

And for any vehicle you keep: record the category in your fleet file, record the repair evidence, and brief the insurance position at renewal. The write-off follows the vehicle for the rest of its life, so your records should too.

Sources

• Scrapping your vehicle and insurance write-offs - GOV.UK
• Tell DVLA your vehicle has been written off - GOV.UK