I subscribe to the allpar.com website which is an excellent MOPAR website that publishes interesting Chrysler Corp. history and current products information.
I received their latest email newsletter today and ran across a link that mentioned the price of the VM Motori diesel option in a Jeep. $4500 or $5000 in a higher optioned Jeep.
I think those who are interested in purchase of a 1/2 ton diesel can assume the option will cost at least $5000.
EPA fuel mileage estimates for a Jeep were stated as 22/30 mpg. That's pretty good mileage compared to our Cummins-Rams, particularly one that weighs 10,000 lbs. like mine but a 1/2 ton pickup is heavier than a Jeep. I wouldn't expect fuel mileage better than mid to upper 20s with that engine in a 1/2 ton.