September 23, 2015
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Volkswagen (VW) became the world's top-selling carmaker trumpeting the environmental friendliness, fuel efficiency and high performance of diesel-powered vehicles that met America's tough Clean Air laws.
VW's success story was so good that pollution-control advocates did their own tests, hoping to persuade other countries to enforce the same strict standards.
Instead, they got a foul-smelling surprise: In actual driving, the VWs spewed as much as 40 times more pollution from tailpipes than allowed by the U.S. Environmental Protection Agency (EPA).