At the time when VW were first being criticised (and later fined heavily) for the use of 'cheat devices' to fool their diesel cars when being emissions tested, I commented that surely VW would not be alone. Many of the parts that control most cars these days come from the same single manufacturer - for example Bosch. It may therefore come as little surprise that FCA Group has today been asked to hand over papers amidst allegations that their cars too might emit more NOx than claimed https://www.bbc.co.uk/news/business-53504642
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