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| Volkswagen: The scandal explained | Volkswagen: The scandal explained |
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| What is Volkswagen accused of? | What is Volkswagen accused of? |
| It's been dubbed the "diesel dupe". The German car giant has admitted cheating emissions tests in the US. According to the Environmental Protection Agency (EPA), some cars being sold in America had devices in diesel engines that could detect when they were being tested, changing the performance accordingly to improve results. | It's been dubbed the "diesel dupe". The German car giant has admitted cheating emissions tests in the US. According to the Environmental Protection Agency (EPA), some cars being sold in America had devices in diesel engines that could detect when they were being tested, changing the performance accordingly to improve results. |
| VW has had a major push to sell diesel cars in the US, backed by a huge marketing campaign trumpeting its cars' low emissions. The EPA's findings cover 482,000 cars in the US only, including the VW-manufactured Audi A3, and the VW brands Jetta, Beetle, Golf and Passat. But VW has admitted that about 11 million cars worldwide are fitted with the so-called "defeat device". | |
| The device sounds like a sophisticated piece of kit | The device sounds like a sophisticated piece of kit |
| 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. | 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 involved 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 from this test mode. | When the cars were operating under controlled laboratory conditions - which typically involved 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 from this test mode. |
| The result? The engines emitted nitrogen oxide pollutants up to 40 times above what is allowed in the US. | The result? The engines emitted nitrogen oxide pollutants up to 40 times above what is allowed in the US. |
| What has been VW's response? | What has been VW's response? |
| The case against VW appears cast-iron. "We've totally screwed up," said VW America boss Michael Horn, while group chief executive Martin Winterkorn said his company had "broken the trust of our customers and the public". An internal inquiry has been launched. | The case against VW appears cast-iron. "We've totally screwed up," said VW America boss Michael Horn, while group chief executive Martin Winterkorn said his company had "broken the trust of our customers and the public". An internal inquiry has been launched. |
| With VW recalling almost 500,000 cars in the US alone, it has set aside €6.5bn (£4.7bn) to cover costs. 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. | With VW recalling almost 500,000 cars in the US alone, it has set aside €6.5bn (£4.7bn) to cover costs. 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. |
| Legal action from consumers and shareholders may follow, and there is speculation that the US Justice Department will launch a criminal probe. | Legal action from consumers and shareholders may follow, and there is speculation that the US Justice Department will launch a criminal probe. |
| Are VW's problems confined to the US? | Are VW's problems confined to the US? |
| Certainly not. Other countries, including Italy, France and South Korea, are opening investigations. Throughout the world, politicians, regulators and environmental groups are questioning the legitimacy of VW's emissions testing. France's finance minister Michel Sapin said a "Europe-wide" probe was needed in order to "reassure" the public. | Certainly not. Other countries, including Italy, France and South Korea, are opening investigations. Throughout the world, politicians, regulators and environmental groups are questioning the legitimacy of VW's emissions testing. France's finance minister Michel Sapin said a "Europe-wide" probe was needed in order to "reassure" the public. |
| At this time, only cars in the US named by the EPA are being recalled, so owners elsewhere need take no action. However, with about 11 million VW diesel cars potentially affected, further costly recalls and refits are possible. Half of the company's sales in Europe - VW's biggest market - are for diesel cars. No wonder the carmaker's shares plunged around 30% in the first couple of days after the scandal broke - with other carmakers also seeing big falls in their stock prices. | |
| Surely, VW heads will roll? | Surely, VW heads will roll? |
| It's still unclear who knew what and when. In 2014, in the US, regulators raised concerns about VW emissions levels, but these were dismissed by the company as "technical issues" and "unexpected" real-world conditions. If executives and managers wilfully misled officials, it's difficult to see them surviving. | It's still unclear who knew what and when. In 2014, in the US, regulators raised concerns about VW emissions levels, but these were dismissed by the company as "technical issues" and "unexpected" real-world conditions. If executives and managers wilfully misled officials, it's difficult to see them surviving. |
| Inevitably, attention will focus on Mr Winterkorn, who recently saw off a bitter power struggle with former VW's chairman Ferdinand Piech. The engine rigging scandal could re-open old wounds. What's more, Mr Winterkorn ran the core Volkswagen brands between 2007 and 2015. "Winterkorn either knew of proceedings in the US or it was not reported to him," car analyst at Evercore ISI Arndt Ellinghorst said. | Inevitably, attention will focus on Mr Winterkorn, who recently saw off a bitter power struggle with former VW's chairman Ferdinand Piech. The engine rigging scandal could re-open old wounds. What's more, Mr Winterkorn ran the core Volkswagen brands between 2007 and 2015. "Winterkorn either knew of proceedings in the US or it was not reported to him," car analyst at Evercore ISI Arndt Ellinghorst said. |
| Are other carmakers implicated? | Are other carmakers implicated? |
| That's for the various regulatory and government inquiries to determine. California's Air Resources Board is now looking into other manufacturers' testing results. Ford, BMW, and Renault-Nissan said they did not use "defeat devices", while other firms had yet to respond or simply stated that they complied with the laws. | |
| The UK trade body for the car industry, the SMMT, said: "The EU operates a fundamentally different system to the US - with all European tests performed in strict conditions as required by EU law and witnessed by a government-appointed independent approval agency." But it added: "The industry acknowledges that the current test method is outdated and is seeking agreement from the European Commission for a new emissions test that embraces new testing technologies and is more representative of on-road conditions." | The UK trade body for the car industry, the SMMT, said: "The EU operates a fundamentally different system to the US - with all European tests performed in strict conditions as required by EU law and witnessed by a government-appointed independent approval agency." But it added: "The industry acknowledges that the current test method is outdated and is seeking agreement from the European Commission for a new emissions test that embraces new testing technologies and is more representative of on-road conditions." |
| That sounds like EU testing rules need tightening, too | That sounds like EU testing rules need tightening, too |
| Environmental campaigners have long argued that emissions rules are being flouted. "Diesel cars in Europe operate with worse technology on average than the US," said Jos Dings, of the pressure group Transport & Environment. "Our latest report demonstrated that almost 90% of diesel vehicles didn't meet emission limits when they drive on the road. We are talking millions of vehicles." | Environmental campaigners have long argued that emissions rules are being flouted. "Diesel cars in Europe operate with worse technology on average than the US," said Jos Dings, of the pressure group Transport & Environment. "Our latest report demonstrated that almost 90% of diesel vehicles didn't meet emission limits when they drive on the road. We are talking millions of vehicles." |
| Car analysts at the financial research firm Bernstein agree that European standards are not as strict as those in the US. However, the analysts say in a report that there is therefore "less need to cheat". So, if other European carmakers' results are suspect, Bernstein says the "consequences are likely to be a change in the test cycle rather than legal action and fines". | Car analysts at the financial research firm Bernstein agree that European standards are not as strict as those in the US. However, the analysts say in a report that there is therefore "less need to cheat". So, if other European carmakers' results are suspect, Bernstein says the "consequences are likely to be a change in the test cycle rather than legal action and fines". |
| It's all another blow for the diesel market | It's all another blow for the diesel market |
| Certainly is. Over the last decade and more, carmakers have poured a fortune into the production of diesel vehicles - with the support of many governments - believing that they are better for the environment. Latest scientific evidence suggests that's not the case, and there are even moves to limit diesel cars in some cities. | Certainly is. Over the last decade and more, carmakers have poured a fortune into the production of diesel vehicles - with the support of many governments - believing that they are better for the environment. Latest scientific evidence suggests that's not the case, and there are even moves to limit diesel cars in some cities. |
| Diesel sales were already slowing, so the VW scandal comes at a bad time. "The revelations are likely to lead to a sharp fall in demand for diesel engine cars," said Richard Gane, automotive expert at consultants Vendigital. | Diesel sales were already slowing, so the VW scandal comes at a bad time. "The revelations are likely to lead to a sharp fall in demand for diesel engine cars," said Richard Gane, automotive expert at consultants Vendigital. |
| "In the US, the diesel car market currently represents around 1% of all new car sales and this is unlikely to increase in the short to medium term. | "In the US, the diesel car market currently represents around 1% of all new car sales and this is unlikely to increase in the short to medium term. |
| "However, in Europe the impact could be much more significant, leading to a large tranche of the market switching to petrol engine cars virtually overnight." | "However, in Europe the impact could be much more significant, leading to a large tranche of the market switching to petrol engine cars virtually overnight." |