If I'm not mistaken, Mercedes just came out with the new E320 BLUETEC...is this a german standard for diesel fuel economy?

Here is evidence of bluetec on mercedes and audi.

Audi:
http://www.seriouswheels.com/pics-2007/2007-Audi-Q7-V12-TDI-Revised-Rear-Angle-1024x768.jpg

MB:
http://www.automobilemag.com/auto_shows/naias_2006/0602_naias_02+2007_mercedes_benz_e320_bluetec+rear _view.jpg