From AB
If you were one of the 30 Bimmerphiles to snag a 2011 Frozen Gray M3 Coupe last month, expect to fill out another round of paperwork before you take delivery of your new matte gray baby.
BMW is apparently requiring all owners to sign a "maintenance agreement" that insists the M3 is never polished or waxed, ran through an automatic car wash or even strongly rubbed. Additionally, BMW politely asks that you immediately remove bugs, bird droppings, tree sap and fuel spills with a soft sponge, and naturally, dealers are more than willing to sell you appropriate products for maintaining the matte finish.
According to enthusiast site Bimmerfest, BMW explicitly states the M3's warranty won't cover any damage due to owner neglect and it notes that all exterior repairs must be performed by a BMW-authorized shop. What's more, if you don't sign the agreement, no Frozen Grey M3 for you. That's a lot of disclaimers. All of which could be easily solved for less if you simply went down to your local custom vinyl shop and wrapped your (decidedly less expensive) standard M3 in a 3M coating.