In particular, the German non-governmental organization Deutsche Umwelthilfe (DUH) conducted tests of the Opel Zafira 1.6 CDTi and found that its exhaust gases contain too much nitrogen oxide.
The DUH report notes that during the tests conducted by its experts, it was found that the concentration of nitrogen oxide (NOx) in the exhaust varied sharply depending on the test mode.
“Emission standards exist so that not the air in the laboratory remains clean, but the air that people breathe. I see no technical reasons for nitrogen oxide emissions to increase sharply exactly when the rear wheels are turning. I have no technically plausible explanation for the Opel car,” believes international transport consultant Axel Friedrich.
Opel's management rejects the environmentalists' claims, explaining that the Zafira's software cannot determine whether the car is undergoing a test on a bench or on the road.
Recall that initially the scandal with understating real emissions affected Volkswagen.
