While Dieselgate refers to VW specifically, there are a lot of companies that have been caught cheating on emissions tests, https://en.wikipedia.org/wiki/Diesel

While Dieselgate refers to VW specifically, there are a lot of companies that have been caught cheating on emissions tests, https://en.wikipedia.org/wiki/Diesel_emissions_scandal https://en.wikipedia.org/wiki/Diesel_emissions_scandal