Full details of how it worked are sketchy although the EPA has said that the

Full details of how it worked are sketchy although

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Full details of how it worked are sketchy, although the EPA has said that the engines had computer software that could sense test scenarios by monitoring speed, engine operation, air pressure and even the position of the steering wheel. When the cars were operating under controlled laboratory conditions - which typically involve putting them on a stationary test rig - the device appears to have put the vehicle into a sort of safety mode in which the engine ran below normal power and performance. Once on the road, the engines switched out of this test mode. The result? The engines emitted nitrogen oxide pollutants up to 40 times above what is allowed in the US. 09:11 3
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CASE STUDY What has been VW's response? "We've totally screwed up," said VW America boss Michael Horn, while the group's chief executive at the time, Martin Winterkorn, said his company had "broken the trust of our customers and the public". Mr Winterkorn resigned as a direct result of the scandal and was replaced by Matthias Mueller, the former boss of Porsche. "My most urgent task is to win back trust for the Volkswagen Group - by leaving no stone unturned," Mr Mueller said on taking up his new post. VW has also launched an internal inquiry. With VW recalling millions of cars worldwide from early next year, it has set aside €6.7bn (£4.8bn) to cover costs. That resulted in the company posting its first quarterly loss for 15 years of €2.5bn in late October. But that's unlikely to be the end of the financial impact. The EPA has the power to fine a company up to $37,500 for each vehicle that breaches standards - a maximum fine of about $18bn.
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