EU Observer reports on a five page internal note from the EU director-general at the commission’s internal market and industry department:

“Absolute NOx emissions of diesel vehicles under real driving conditions have hardly changed” despite “various” EU “steps”. “On the road, a Euro 5 vehicle emits almost the same amount of NOx per km as a Euro 3 vehicle.”

The testing method, which is nothing like real road conditions, is mentioned as a contributing factor.