For what its worth, and its probably not worth anything,my 4spd Superbird has ACC carpet that was put in 15yrs ago.It is still black,not wrinkled and fit like a glove with no trimming.The carpet in my 62 Savoy wagon came from Dante three years ago,[no clue who his supplier is] same thing,no issues.Did something change ?
Is your cars' stored indoors all the time?
My ACC carpet was starting to fade in one year from being outdoors. New cars' black carpet doesn't fade that fast.
Indoors,as I expect 99% of the ones discussed here also. c