Porsche has made the first year of scheduled maintenance complimentary, and it has fitted an improved
carbon cabin filter to keep out particles, pollen, odors and dust from the air even more effectively.
Not exact matches
It looks to me as though your
cabin filter has a hole in it and therefore is blowing
carbon all over the inside of the
cabin.
Cabin filters on modern cars use something called activated
carbon (or at least some of them do) which is basically two paper / cotton sheets either side of a fine layer of
carbon particles.