the emission standard in US and EU have different focus. benefit

 US is more concerned health impact, EU is more for fuel efficiency. TDI tech. helped diesel car market, benefited German cars. I heard (I am not sure it is true) aimed keep diesel car out of US market, US intentionly set two standards for diesel car and truck with large discrepancy to make diesel car can hardly pass it while keep the performance as maker claimed. VW played dirty to deal with this standard.  

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now the gas price is low, fuel efficiency is not the top piority -MoonRiverMe- 給 MoonRiverMe 發送悄悄話 (0 bytes) () 01/27/2019 postreply 10:01:00

Not so low. In Europe price is as many as twice or -WXC1204- 給 WXC1204 發送悄悄話 (310 bytes) () 01/27/2019 postreply 13:33:13

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