The European Commission's in-house science body has found suspicious emissions behaviour in diesel cars from Audi and Citroen.
EUobserver has seen the test results which show much higher emissions when the conditions of the official test are slightly changed.
This indicates that the models were designed to pass the test, but not necessarily to be clean during normal driving.
A spokeswoman for the commission confirmed that the Joint Research Centre (JRC) carried out “a number...
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