2019 Ford Ranger Reveal

ShinerBock wrote:

The reason why Ford got rid of the compact Ranger was mainly due to CAFE regulations....The Ranger had a footprint of a small car, but its fuel economy was much worse than most cars with the same footprint.

This is one reason why I tend to say that not all EPA regulations are good and many have adverse side effects .....EPA didn't know that when they made the 2011 diesel emissions years before it was enacted, that they would be creating the DEF industry and all of its added pollution.

Ah, thanks for the clarification, it makes perfect sense now. Unfortunate, but I understand.

Agreed on the EPA. I took several Environmental Studies courses and we always talked about thermodynamic efficiency. The basic idea is to never consider just the immediate efficiency of a single device, but to account for all energy input required to make and operate it.

Your example is perfect. DEF and the catalyst used with it might reduce NOx emissions, but how much other energy input is required to make the fluid and operate the system? Is the total sum of inputs less polluting than not having the system at all? For many systems it's better and others not. I don't know if DEF is in the better category, but just because one part makes something 'cleaner' it doesn't mean the whole process is cleaner.