It only does if A prices are very high and B the difference between those prices is significant. If not, you may as well stick with the petrol engine.
Chrysler as in the Jeep Grand Cherokee. They will be introducing the V6 VM Motori engine currently used in EDM Grand Cherokees in the US.
This (and the rest of the post too).
They also say that the difference in taxation between diesel and petrol in Europe is protectionist measure against foreign car makers, because no one but European car manufacturers have the expertise to make good diesels (although Japan seems to be catching up quickly).