This gives you a great example of how effective the foam paint brush method can be. This seat had a few trouble spots, but essentially the entire seat bottom and seat back needed some love. I started with 3 light coats on the outside panels of the lower and upper bolster, and then 2 more light coats along the entire seat surface to even the whole thing out. If you're looking to touch up the seats in your Mercedes, or for dozens of other major manufacturers, follow this link for more information: https://www.seatdoctors.com/diy-leather-dye