Nobody has mentioned that a cat C (now called an S) is for structural damage
I have seen old cat C car's with cracked bumpers & 6 month old car's with the front end ripped off & engine ripped out with a cat d marker.
It's why we now have cat N & S
What he said.
In old money
-CAT C = More to repair than the car is worth
-CAT D = Other things will make it close to or over what the car is worth (I.e hire car charges, admin fees etc etc).
That said, even today it’s open to interpretation but less so.
An NB Mx-5 was made a CAT S as the person assessing it deemed the rear crash bar was structural. All it needed was a bumper, crash bar and a tail light.
The irony is friends have repaired cars that would be well in CAT S territory and I’ve owned some
Obviously crash damaged cars with no marker. Yet folks still get funny over an accident marker.