Remember the CHEAT made it *more* fuel efficient while allowing NOx to increase. Even at the “cheated” level the NOx is a fraction of what it was back in the day. Oh, and “more fuel efficient” = “reduced greenhouse gases.” So yes, if someone wants to sell me their TDI on the cheap, I’m in!

These VW diesels produced far fewer greenhouse gases with the “illegal” calibration than they would have with the “legal” one. If you don’t understand this you are not entitled to an opinion. Pls ref.

Here’s a twist...but first, props to IndyPhil for a really great approachable explanation, and to BryGuy for pointing out that there is some deja vu here: the EPA has seen similar hijinks from big truck diesel manufacturers in the past.