I bought a Cat D car, on the understanding that it would never be the same value as a non-write off. I was told that mine was a stolen/recovered by the (small) dealer, but, the HPI check showed up that it was a write off due to damage, so, I had it checked over by a Mitsubishi dealer after my test drive. No damage showed up in the check over and I got underneath the car myself to have a good look, although I'm no expert. The check up at Mitsubishi showed that it had a Euro spec headlight on the right hand side and they quoted almost £1 000 to replace it! I don't know at what percentage of value insurers start to write cars off but I assume mine had a front end impact (due to the headlight) and on looking into prices it was possible the quote to replace the bonnet, lights, front bumper etc. exceeded £4K. Would they write off a £10K car for that? I think they did.
I paid £7295 for a car that would have cost around £9 000- £10 000 if it was not a Cat D. I've now had it for two years and spent a lot on modifications, but, to date, nothing has gone wrong with it. I'd certainly buy another Cat D, but I, again, would want it checked out.
I don't agree with Fox, although I do see his point, as I think you can pick up a perfectly good car for a lot less that a similar "supposedly" undamaged version, keeping in mind that it's never going to be worth as much on resale.