While the urea-injection system won't come online until the 2009 model year, the kids over at Inside Line managed to smuggle an E320 diesel into the Golden State for testing. The seemed to like it quite well, calling it a better value than the E350, even with the $1K price premium over the gasoline model. But they were shocked — shocked — that they couldn't get low-sulfur diesel in Fontana, CA. Unless they were at California Speedway, or on their way somewhere else there is no reason to go to Fontucky, ever. The poor mid-sized Merc must've been traumatized.
Follow-Up Test: 2007 Mercedes-Benz E320 Bluetec [Inside Line]
Five US States to Mercedes: Bluetec Not Green Enough [Internal]