Sadly, that is exactly what that Mazda SkyActiv didn’t need. They met US emissions but not California without all that extra crud, and then realized that they just couldn’t compete against VW’s “technology” in the small US diesel market.
Other countries have it, though.
Our government is hell bent on delivering us back to the Stone Age.
I go to work and we have toilets that need to be flushes three or four times. My new washing machine barely uses any water and when we wash something black it has to be hand rinsed to get the remaining detergent out.
I drove about 1100 miles last year through Germany, Switzerland, France and the Czech Republic in a Volvo V60. After about the first 8 hours of driving I started to think the gauge was broken as I still had more than 1/2 a tank left. That car got amazing mileage! Yeah, as a turbo diesel with a small engine it was a bit sluggish but when it came to fuel efficiency, it was mind blowing.
On a side note, we bought a 2016 Audi S5 last year and it has been a great car. We drive a lot and at 20k there have been zero issues. Interestingly it’s electronically limited to 155 top speed. Who pulled that number out of their a**? Not that I plan on getting it up there but is 155 really much safer than 160 or 165?
Sigh.
Cheers.
What is DEF?
I suspect it was mainly the DPF that they were trying to ‘protect’ by having it run ‘part-time’. The thing would likely crap out very quickly if it ran full-time, and the expense of replacing it every 2 or 3 oil changes would more than offset any fuel economy savings.
They were great cars regarding global warming (due to their sipping of fuel)...but getting them clean enough to make Los Angeles happy on a bad day simply wasn’t humanly possible - so no more diesels (at least low-end diesels) for Americans.