UK inquiry after Volkswagen scandal finds much higher nitrogen oxide levels than when vehicles are tested in laboratory
Diesel cars are producing many times more health-damaging pollutants than claimed by laboratory tests, with some emitting up to 12 times the EU maximum when tested on the road, according to a government investigation undertaken following the Volkswagen scandal.
A Department for Transport (DfT) study of cars made by manufacturers such as Ford, Renault and Vauxhall found there was a vast difference in nitrogen oxide emissions measured in the laboratory and under normal driving conditions.
Not a single car among 37 models tested against the two most recent nitrogen oxide emissions standards met the EU lab limit in real-world testing, with the average emissions being more than five times as high.
However, the DfT said it had found no vehicles outside the VW group with systems in place to deliberately rig emissions figures.
Robert Goodwill, the junior transport minister, said: “Unlike the Volkswagen situation, there have been no laws broken. This has been done within the rules.”