The mass authorized motion centres on allegations that producers tried to “cheat” emissions checks through the use of banned “defeat units” on diesel automobiles made by Mercedes-Benz, Opel and Vauxhall, Nissan and Renault, Volkswagen and Porsche, Peugeot and Citroen, Jaguar Land Rover, Ford, BMW, FCA and Suzuki, Volvo, Hyundai-Kia, Toyota and Mazda.
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