What do you mean by this? Got any links handy?
https://theicct.org/sites/default/files/eu-commission-euro-7...
https://en.wikipedia.org/wiki/European_emission_standards
And there's been plenty in the automotive press saying how it will negatively affect the car manufacturers, e.g:
https://www.autocar.co.uk/car-news/industry-news-tech%2C-dev...