My last car was a Cat D. Reasonably high value one, about £7.5k, but it was around £4k cheaper than a normal one. I saw the receipts for the repair work, although not photos of it beforehand so gave it a very, very thorough look over – checking panel gaps, getting the boot carpet up, making sure all the bolts for the panels under the bonnet were present and lined up properly. It was fine, and was absolutely great in the two years I owned it before some idiot crashed into it and wrote it off again.
The payout you get in that situation is a spurious book value for a non-cat D car, same as any other car, minus 20%. I looked at other Cat Ds this time but nothing took my fancy, and none of the same car were available so I got a normal car. But I’d buy Cat D again.
Oh, and check all the buttons inside work and check the aircon works – mine had had a front end impact and the hose from the condenser had split and needed replacing but had been missed during the repairs. It cost me an additional £150 including parts to sort.
Insurance was the same, although Admiral wanted it to have an MOT even though it was less than 3 years old.