Those diesels that are used in the caravan (which is a slow thing to drive by the way) are the same ones that were used in the Jeep Liberty that they had here - 2.5/2.8 CRD diesel.
By the way two interesing things bout that jeep, the first one is in its EU form with a 5 speed and the 2.8 CRD, it averages about 35 mpg. The other thing is I have on my list of assembly/manufacturing joint ventures with Chrysler Iran's Pars Khodro company - I haven't confirmed it yet but it is likely that there is an agreement with them to build it.
Oh here is something that shows how backwards our thinking is on the issue of our cars, Iran has about 60% of their cars running on CNG, not gasoline. That's part of the little write up about Pars Khodro in my Chrysler booklet.