Emissions from vehicles with Euro 6/VI technology

Diesel cars employing current engine technology with particulate filters have previously been shown by to emit more NOx and NO2 than model certification tests show. As a result, limit values for ambient levels of nitrogen dioxide are exceeded in many Norwegian urban areas. An important and interesting question is to what extent new vehicles with Euro 6/VI technology can contribute to improving air quality. Exhaust emission measurement from Euro 6 certified light test vehicles and two heavy duty vehicles with Euro VI certified engines indicate that it is possible satisfy low emissions targets of the regulated exhaust components. However emissions of some unregulated exhaust components may increase