ShinerBock wrote:
There aren't any countries that abandoned US regulations. Only Canada has adopted current US emission regulations since our markets are so close to each other and they still have them. This is the same reason why most(but not all) countries around the EU adopted Euro standards. So I am not sure why you would make such a comment.
If you want to see who has what as of 2016, then you can check here.
Global Comparison: Light-duty Emissions
Yes only Canada and they help build US vehicles which makes sense.Other countries did not have to accept Euro( China , they import Chevrolet and some Buick vehicles from the US, and Australia but they like the world outside NA, have accepted Euro emission standards
Many have abandoned imperial measurement for metric, as regards regulations