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Category S means structural damage declared by an insurer

Cat S Check

Category S write-off history means structural damage. The car can be legally resold after repair, but the damage affects safety, insurance costs and resale value permanently. Check any UK reg before you buy.

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Free results load in seconds. MOT history, mileage, tax and specs always free. Add the full check on the results page for £4.99 + VAT. No account needed.

Structural damage
Cat S = chassis, sills or crumple zones affected
£4.99 + VAT
Write-off check included in full report
20-40% lower value
Typical impact of Cat S on resale price

What your results look like

Free data loads in seconds. The full check unlocks within 30 seconds of payment.

SAMPLE
AB12 CDE
VW Golf 1.5 TSI
2019 · Silver · 1.5L Petrol
Always FreeFREE
✓
MOT History6 tests · Last: PASS Jun 2025 · Advisory: brake pad wear noted
✓Mileage Records48,203 miles · Consistent year-on-year
✓Tax StatusTaxed · Valid until Jan 2027
✓Vehicle Specs1.5L Petrol · 128g/km CO2 · Euro 6
Full History Report£4.99 + VAT
✓Outstanding Finance
CLEAR
✓Stolen Check
CLEAR
✓Write-off History
CLEAR
✓Mileage Verification
CONSISTENT

Sample report. Registration, vehicle details and results are illustrative only.

Category S vs Category N

Both are insurance write-off categories for vehicles that can be legally repaired and resold. The difference is the type of damage.

Category SStructural damage
  • Chassis, sills, crumple zones or body-in-white damaged
  • Must be repaired and inspected before returning to road
  • Higher risk profile than Cat N
  • Always declare on insurance applications
  • Affects crash protection if poorly repaired
Category NNon-structural damage
  • No structural damage to chassis or body-in-white
  • Often cosmetic, airbag or electrical damage
  • Lower risk profile than Cat S
  • Must still be declared on insurance applications
  • Still reduces resale value significantly

See the Cat N check page for more detail.

What Cat S history means for buyers

Cat S is legal to buy and own. The risks come from not knowing about it, or from buying one with substandard repairs.

Structural integrity
A chassis or crumple zone that was damaged and poorly repaired may not perform correctly in a subsequent collision. The consequences can be severe.
Insurance refusal
Cat S history must be declared on every future insurance application. Some insurers refuse cover entirely. Higher premiums are typical from those that do insure.
Resale value impact
Cat S history follows the vehicle permanently. Future buyers will discount heavily or walk away. You take on a depreciating asset with a structural caveat.
Undisclosed repairs
A seller who does not disclose Cat S status may also not have documentation of the repair. Without repair records, you cannot verify what was done or by whom.

Check any UK reg now

How we source our data

MOTCO accesses the same underlying databases as HPI, Total Car Check and CarVertical. No vehicle history provider has exclusive access to these sources.

DVSAUK Government

The Driver and Vehicle Standards Agency publishes full MOT test records from 2005 via a government API. Every test result, advisory, failure reason and odometer reading is sourced directly from the national testing database with no third-party processing.

Police National DatabaseLaw Enforcement

Operated by the National Police Chiefs' Council. All UK police forces submit stolen vehicle records here. A check against the PND is the authoritative source for stolen status used by all major vehicle history providers in the UK.

Finance and insurance registersIndustry

Outstanding finance data comes from UK lender databases covering HP, PCP and lease agreements. Write-off data comes from the Motor Insurance Anti-Fraud and Theft Register (MIAFTR) and the Claims and Underwriting Exchange (CUE). These are the same registers used by HPI, Total Car Check and CarVertical.

How it works

1
Enter any UK reg
Works on all UK-registered vehicles. No account needed.
2
Free results instantly
MOT history, mileage records, tax status and vehicle specs load immediately.
3
Add the full report
Full write-off history (Cat A, B, S and N), stolen check, outstanding finance and mileage verification for £4.99 + VAT.

If the check finds Category S history

Do not complete the purchase until you have worked through these steps.

1
Request the full repair documentation
Ask for itemised receipts from a manufacturer-approved bodyshop or structural repairer. Documentation should confirm what was repaired and include a sign-off that the vehicle is roadworthy.
2
Commission an independent structural inspection
An inspection by a qualified structural engineer or manufacturer-approved repairer is the only way to verify repair quality. Budget £100 to £200. This is non-negotiable on a Cat S vehicle.
3
Negotiate 20 to 40 percent below the clean equivalent price
Cat S history is permanent and depresses resale value at every future transaction. A seller refusing any negotiation on a Cat S car is a red flag.
4
Confirm insurance cover before purchasing
Some insurers will not cover Category S vehicles at all. Confirm availability and the premium before committing. An uninsurable Cat S car has no practical value.
5
Verify roadworthy status via MOT history
A Cat S vehicle that was not re-inspected after repair cannot legally be driven. Check that MOT history shows a pass after the write-off date with no unexplained gaps.

Related guides

Common questions

What is a Category S car?
Category S (previously Category C) means an insurer declared the vehicle a total loss due to structural damage. The chassis, crumple zones, sill sections or body-in-white sustained damage that the insurer judged uneconomical to repair. The car can legally be repaired and returned to the road, but must be re-inspected before going back into use.
Can you buy a Cat S car?
Yes. Category S vehicles can be legally bought and sold in the UK. The risk is buying one without knowing. A disclosed Cat S car priced accordingly is a different transaction to an undisclosed one sold at full market value. The check tells you which situation you are in.
Is a Cat S car safe to drive?
It depends on the quality of repair. A properly repaired Category S vehicle, with documented work from a reputable bodyshop, can be roadworthy. A poorly repaired one may have compromised crash protection, alignment issues or hidden structural weaknesses. Independent inspection by a qualified structural engineer or manufacturer-approved repairer is recommended before buying.
Does Cat S affect insurance?
Yes. You are legally required to declare Category S write-off history when applying for insurance. Some insurers will not cover Cat S vehicles at all. Those that do typically charge higher premiums and may impose lower claim limits. Failing to declare the write-off history will invalidate your policy.
How much does Cat S reduce a car's value?
Category S write-off history typically reduces a vehicle's market value by 20 to 40 percent compared to a clean equivalent. The exact reduction depends on the make, model, age and quality of repair. You should factor this into any purchase price and any future resale expectations.
How much does the Cat S check cost?
The Category S check is included in the £4.99 + VAT full history report. This covers all four insurance categories (A, B, S, N), outstanding finance, stolen check and mileage verification. MOT history and mileage records are always free.

Check before you buy

Full write-off history (Cat A, B, S, N), stolen check, outstanding finance and mileage verification. £4.99 + VAT.

Enter any UK reg

Write-off category data sourced from the Motor Insurance Anti-Fraud and Theft Register (MIAFTR) and Claims and Underwriting Exchange (CUE). MOT data from DVSA (UK Government). Reviewed by the MOTCO vehicle data team. Updated June 2026.