Wednesday, November 25, 2015

Many European diesels have high emissions under real driving conditions

It appears that Volkswagen is not the only one with high NOx emissions under real driving conditions. Tests performed by Deutsche Umwelthilfe (DUH) show that Opel and Renault diesels also have increased NOx emissions under normal driving conditions. DUH claims that Renault Espace diesels have up to 25 times higher emissions than allowed in Europe. In a response Renault claims that their diesels pass the test. Of course Volkswagens also pass that test. It's the difference between between emissions under real driving conditions and the test that's disturbing. Volkswagen cheated by using a cheat device. It seems that officially Renault didn't cheat. Instead the cause seems to be that Renault tests with a cold engine. Lower temperatures lead to lower NOx emissions. In real life those engines heat up over time and then emit poisonous NOx emissions that kill people. In real life we need stricter regulations to ban such practices.

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