Studie des icct, 5.1.2017 (engl. Originalfassung)
The months since the Volkswagen emissions cheating scandal broke in September 2015 have seen a heated public debate concerning exhaust emissions of nitrogen oxides (NOX) from diesel cars in Europe. The crux of that debate is that under normal operation many of these vehicles far exceed the limits imposed by regulation and certified by official type approval tests, which all vehicle models must pass as a condition of being offered for sale in the European Union. There has been little comparable discussion of NOX emissions from diesel trucks. The most likely explanation for this different treatment is that data from in-use testing indicates that, in contrast to Euro 6 cars, Euro VI trucks do not systematically emit significantly more NOX in real-world, everyday operation than they are certified to. And there is a likely explanation for that as well: emissions from diesel cars and trucks are regulated differently under the Euro standards.
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