http://www.caranddriver.com/news/spied/08q2/2010_mercedes-benz_e350_e550_and_e320_bluetec-spied
This is MB website, it shows E350 Bluetec (drill to E class, then to "E350 Bluetec Sedan" at lower right corner:
http://www.mbusa.com/mercedes/#/classLanding/?yr=2010&vc=E