Unfortunately at this point its speculation only as to the emissions of the smaller diesel engines. I chose to believe that in the case of VW at least, that they are putting their best technology forward.

It wasn't but just a few years ago that VW made a decision to be the worlds largest manufacturer, and would be going head to head against the traditional quality leaders of Honda, Toyota, Ford, Hyundai, etc.

They seem to be accomplishing that goal. Their Bluetec technology seems to be at the forefront of the emisssions game, and if I recall correctly VW diesel was also at the forefront of engine design that required ultra low sulpher.

Still think somethings cockeyed here.