Originally Posted by gongju
I've had 3 black BMW's: Black Sapphire Metallic, Jet Black and now Jerez Black Metallic. Jerez is by FAR the worst to upkeep out of any of those colors I've ever owned, also including any other vehicles I've owned. Don't get Jerez unless you are always going to hand wash/detail yourself frequently with good products, this paint in particular sucks inmho. My next M3 on order is Space Gray because of this (although I wouldn't have minded Black Sapphire Metallic since it's still my favorite paint color).
+1 I think my JRZ BLK is the hardest car to keep clean I've ever owned. Had a black '97 GTi VR6 in college and that didn't require nearly as much attention despite living in Boston and without a garage.