Common with the W210s. Mine is in good shape actually, black too. I've read posts where guys have fixed the crack with putty and then painted with a latex paint tinted to match the dash.

If a crack starts, you could probably stop it from further expanding by sealing the edges with clear nail polish or something similar.

__________________
Chris
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired

"And a frign hat. They gave me a hat at the annual benefits meeting. I said. how does this benefit me. I dont have anything from the company.. So they gave me a hat." - TheDon