Well they have to add a stunning $$$ amount of sensors, controls, exhaust aftertreatment (catalyst, diesel particulate filters and urea injection), etc to meet the new EPA diesel emission regs for 07 and 010. The trucking companies did a huge "pre-buy" of 2006 units to avoid this as long as possible. So the answer to your question is "not a chance"
and all this generally hurts fuel mileage also :-(
Thanks for the comments and as you can see my hesitation on this thread.
Some people swore by them but too many swore at what the "stealerships" charged for maintenance.
I was looking for a high mileage/low maintenance vehicle for a third car for running around town or trips. I already have an SUV and a mini-van for the kids. I have an insulated garage so even if it got much colder than normal I would probably not have any issues with running errands in it.
The Honda Civic seemed to fit my considerations for a third vehicle quite nicely but I really liked the Jetta. I may look at them again in a few years.