I would imagine that these paints have pros and cons in terms of maintenance:
- Hides dust well so you can wash less frequently
- Won't swirl since swirl marks are not deep, and the surface isn't smooth so swirls likely won't happen
- No need to wax
- RIDS - etch marks if for instance some road debris flys across your hood or along the side of the car - may be difficult to polish out and will also be more visible on a matte paint than on a gloss one
- Chips and scratches - also more visible on matte paints, and dr color chip doesn't really have a solution for matte paints.
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