For anyone treating this as new information... it's not. The etymology of "defeat device," the term the EPA is using, dates back to the 70s when automakers started pulling similar crap.
Chrysler, Ford, GM, Honda, Toyota, Caterpillar, Cummins, Detroit Diesel, Mack, Navistar, Renault, and Volvo Trucks have all been caught rigging their vehicles to lie to owners and emissions testers, with varying degrees of plausible deniability.
Chrysler, Ford, GM, Honda, Toyota, Caterpillar, Cummins, Detroit Diesel, Mack, Navistar, Renault, and Volvo Trucks have all been caught rigging their vehicles to lie to owners and emissions testers, with varying degrees of plausible deniability.
https://en.wikipedia.org/wiki/Defeat_device
The (automotive) world has always been like this, it's just been a little while since the last highly publicized scandal.
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