DUH says testing indicates use of defeat device in BMW 320d diesel

Results of testing on a Euro 6 BMW 320d diesel by the German environmental organization Deutsche Umwelthilfe (DUH), ZDF’s WISO and a software expert point to the use of inadmissible defeat devices, according to DUH. The organizations found that road-testing NOx emissions are up to 7.2 times higher than those produced on the dyno, which met the official NOx limit. The main cause for the higher on-road values ​​is that the exhaust gas recirculation (EGR) is in some cases practically switched off under certain conditions, DUH said.

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