Dieselgate has Mercedes-Benz in hot water in Europe but not in US
example paragraph:
"In the US, the Mercedes dieselgate scandal has fallen under the radar. A class-action lawsuit filed in New Jersey in 2016 on behalf of US-based Mercedes owners cites tests of several Mercedes diesel models and alleges that one car emitted 83 times more pollution than US regulations allow. Another is said to have emitted 91 times the legal standard. The suit alleges the emissions are due to defeat devices. (Daimler, Mercedes’ parent company, has submitted a motion to dismiss the case.) There have been reports of an official US Mercedes dieselgate investigation, but no official confirmation."
Obviously internet searches for up to date information.