“Today’s outcome is based on a broad agreement between the political groups,” the Parliament’s rapporteur on the file, Dutch MEP Esther De Lange, said. “We have to be realistic about the discrepancy between emissions measured in laboratories and those measured in real-driving conditions by taking into account statistical and technical uncertainties linked to these measurements. At the same time, it’s important to show ambition by gradual lowering the value for the conformity factor through annual downward revisions, based on the scientific assessments of the Joint Research Centre,” De Lange added.
https://www.neweurope.eu/article/meps-set-more-stringent-limits-on-portable-car-emission-tests/