Vinyl bonded onto a thin foam. My rear shelf peeled so badly I had to replace it. An ex AML factory trimmer could do nothing with it. There is no leather in any of the trim pieces.
The centre console/rear dash/door cards are all vinyl without the cloth backing so very delicate. I imagine the dash is the same but not examined it that close to be fair so it may be leather. The same trimmer has had to do many Ferrari dashes that were real leather and had shrunk. They leave plenty of spare where Maserati cut to the edge and do not put a return on them.
