German environmental lobby group DUH has published the results of an emissions test with a C200 CDI, but Daimler says the findings are “questionable.”

German environmental lobby group DUH has published the results of an emissions test with a Mercedes C200 CDI, but Daimler says the findings are “questionable.”

First of all, the rather funny “DUH” abbreviation comes from “Deutsche Umwelthilfe.” A press release issued today says a 2011 Mercedes C200 CDI Estate generated 2x nitrogen oxide emissions compared to the legal limits corresponding to Euro 5 regulations. These tests were actually done in Bern, Switzerland by the University of Applied Sciences that also ran similar tests with a Renault Espace and an Opel Zafira.

Daimler labels these results “questionable” because DUH isn’t offering any information concerning the conditions of the test. A company spokesman mentions the German environmental lobby group hasn’t said anything about important factors such as the vehicle’s loading weight and the temperature during the tests.

Back in September, DUH accused Daimler of using defeat devices to illegally manipulate the results of emissions tests for several models. The German automotive conglomerate issued a prompt response, saying the allegations are totally false.

It seems DUH is focusing primarily on diesels as all three cars tested had a turbodiesel engine under the hood. The Espace had the 1.6 dCi whereas the Zafira was equipped with the 1.6 CDTi. In both cases, DUH’s results showed the cars did not comply with the emissions standards. As a matter of fact, nitrogen oxide emissions of the Espace were up to 25 times higher than what Euro 6 allows.

Source: duh.de via europe.autonews.com

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German lobby says Mercedes C200 CDI at 2X legal emissions