http://motherboard.vice.com/read/res...tm_source=mbfb
"A team of scientists led by chemist Axel Friedrich presented the results of a new emissions analysis earlier this week in Berlin. The data apparently demonstrates that Mercedes and BMW also manipulated vehicle emissions values in order to meet legal limits, just as Volkswagen admitted doing."
The article is light on details as to what BMW may have been doing to manipulate test results, but I'm sure we'll learn more as time goes on. It would appear that the plot thickens.