Surprise! BMW was named the most sustainable auto manufacturer for 2011 by the SAM Group for the Dow Jones Sustainability Indexes. Except that it isn’t really a surprise: BMW has earned top sustainability honors for the past seven years. The maker of the luxurious six-figure 7-series and the cheap and cute Mini is also the only auto maker to be listed on the DJSI every year since the indexes were created in 1999.