I mean, Jeep and Dodge (when owned under their American umbrella corp., FCA) were later found to be using similar defeat devices (see "Other manufacturers [0]). Though if you want to smear them, you may as well go all in and point out they were the original Nazi car brand - not even Tesla has that kind of credibility

[0] https://en.m.wikipedia.org/wiki/Volkswagen_emissions_scandal