Actually Ford Explorer Diesel remain a ghost car on second hand websites.
. You'll find plenty just to learn there is none.
Most car makers have diesel models has they are selling them in Europe. Isn't the Army Hummvee a diesel? Does California regulation mean that California national guard cannot buy them?
About polution they polute differently. Gasoline is throwing more CO2 in the atmosphere while diesel is rejecting more micro particules (favoring athma, for exemple). In fact, Gasoline helps warming the atmosphere while diesel helps cooling it up. I used to buy the expensive diesel (with less sulfur...) but, since I learned that, I went back to the regular more poluting one (I don't have athma but suffer from heat). Sorry about others.
