Cat S vs Cat N: The Differences That Actually Change What Your Car Is Worth

Cat S vs Cat N: The Differences That Actually Change What Your Car Is Worth

The two letters on a write-off decide more about your car's value than almost anything else. Cat S and Cat N get lumped together as "write-offs", but they are priced, repaired, insured and resold differently. If you're deciding whether to retain, sell or walk away, here is the comparison that matters.

The one-line difference

Cat N: non-structural damage. Panels, lights, bumpers, doors, electrics, interior. The car's structure is untouched.

Cat S: structural damage. Chassis legs, crash structure, structural panels. Repairable, but the repair involves the car's skeleton.

Both can legally return to the road. Neither requires a mandatory government inspection to do so, though good practice and buyer confidence favour a professional post-repair check on any Cat S.

Paperwork

Cat N keeps its original V5C: you keep the log book, note the category, and carry on. Cat S requires notifying the DVLA and applying for a replacement V5C, and the category is marked on the vehicle record permanently. That extra step is friction, and friction shows up in price.

Value: which is worth more?

Model for model and damage for damage, Cat N is worth more, usually by a clear margin. Three reasons: the repair is cheaper and lower-risk, the paperwork is simpler, and future buyers of the repaired car apply a smaller discount to a non-structural history. A lightly damaged Cat N of a popular model can achieve a strong share of its pre-accident value sold directly to the trade.

That does not make Cat S bad news. Rebuilders actively want Cat S stock because the bigger discount at purchase is where their margin lives, and desirable models with honest, well-photographed structural damage sell reliably. The mistake is pricing a Cat S like a Cat N, or accepting a bottom-of-chain salvage figure for a Cat N that deserves far more.

Insurance and running a repaired car

Both categories can be insured after repair. Some insurers ask more questions or adjust premiums, and the market for insuring repaired write-offs has grown as repaired cars have become mainstream on UK roads. Declare the category honestly; failing to do so risks the policy.

The seller's decision in short

If you've got a Cat N: you are holding the more valuable category, so do not let it go for a generic salvage figure. If you've got a Cat S: your buyer is a rebuilder, so give them the photos and honesty they need to price the structure, and let competition between them do the rest.

Either way, the same rule applies. The first number you're offered is the bottom of the chain, not the market.

Find out what yours is worth

List your Cat S or Cat N free on Second Gears and get direct offers from verified UK trade buyers who compete for exactly this stock. No auction fees, buyer collects.

List your write-off free on Second Gears. Retain your vehicle, sell direct, and keep the difference.

Related reading: What Are Cat S, Cat N and Cat B Cars? The Complete 2026 Guide and [How Much Is My Written-Off Car Worth?]

Cat S vs Cat N: The Differences That Actually Change What Your Car Is Worth

The two letters on a write-off decide more about your car's value than almost anything else. Cat S and Cat N get lumped together as "write-offs", but they are priced, repaired, insured and resold differently. If you're deciding whether to retain, sell or walk away, here is the comparison that matters.

The one-line difference

Cat N: non-structural damage. Panels, lights, bumpers, doors, electrics, interior. The car's structure is untouched.

Cat S: structural damage. Chassis legs, crash structure, structural panels. Repairable, but the repair involves the car's skeleton.

Both can legally return to the road. Neither requires a mandatory government inspection to do so, though good practice and buyer confidence favour a professional post-repair check on any Cat S.

Paperwork

Cat N keeps its original V5C: you keep the log book, note the category, and carry on. Cat S requires notifying the DVLA and applying for a replacement V5C, and the category is marked on the vehicle record permanently. That extra step is friction, and friction shows up in price.

Value: which is worth more?

Model for model and damage for damage, Cat N is worth more, usually by a clear margin. Three reasons: the repair is cheaper and lower-risk, the paperwork is simpler, and future buyers of the repaired car apply a smaller discount to a non-structural history. A lightly damaged Cat N of a popular model can achieve a strong share of its pre-accident value sold directly to the trade.

That does not make Cat S bad news. Rebuilders actively want Cat S stock because the bigger discount at purchase is where their margin lives, and desirable models with honest, well-photographed structural damage sell reliably. The mistake is pricing a Cat S like a Cat N, or accepting a bottom-of-chain salvage figure for a Cat N that deserves far more.

Insurance and running a repaired car

Both categories can be insured after repair. Some insurers ask more questions or adjust premiums, and the market for insuring repaired write-offs has grown as repaired cars have become mainstream on UK roads. Declare the category honestly; failing to do so risks the policy.

The seller's decision in short

If you've got a Cat N: you are holding the more valuable category, so do not let it go for a generic salvage figure. If you've got a Cat S: your buyer is a rebuilder, so give them the photos and honesty they need to price the structure, and let competition between them do the rest.

Either way, the same rule applies. The first number you're offered is the bottom of the chain, not the market.

Find out what yours is worth

List your Cat S or Cat N free on Second Gears and get direct offers from verified UK trade buyers who compete for exactly this stock. No auction fees, buyer collects.

List your write-off free on Second Gears. Retain your vehicle, sell direct, and keep the difference.

Related reading: What Are Cat S, Cat N and Cat B Cars? The Complete 2026 Guide and [How Much Is My Written-Off Car Worth?]