New “real world” emissions tests fail to prevent high levels of pollution from diesel cars during rush hour, according to new data.
Diesel vehicles are the main cause of the UK’s widespread levels of illegal air pollution, with the VW cheating scandal exposing the fact that virtually all diesel cars emitted far more toxic fumes than in official laboratory based tests. Since 1 September, new models must now be tested on real roads, but the new data shows even this does not prevent high levels of fumes in slow traffic, when pollution is at its worst for drivers and other road users.
Emissions Analytics, a respected testing firm, measured the emissions from two diesel cars on rush hour journeys into and out of London. In the most congested three-mile stretch of the evening rush hour, a VW Golf and Vauxhall Insignia both emitted far more nitrogen oxides (NOx) in their official real world tests – 42% and 118% more, respectively.
There is no suggestion that either of the cars have broken any regulations, as the “real driving emissions” (RDE) test allows the cars to be tested at different times of day, combines results from urban, rural and motorway driving and only applies to new models coming on to the market now.
Greenpeace, which commissioned the new research, says the results expose a new loophole in emissions tests. “The RDE tests should leave the auto industry no room to hide their cars’ real emissions,” said Paul Morozzo, from Greenpeace UK. “These new tests are not ‘real’ enough to ensure the most polluting cars are kept off our roads. That car companies are allowed to avoid rush hour traffic when testing in urban areas is a major flaw.”
News Source: Guardian Motoring – Continue reading this article…