I did a google on "2008 jetta diesel" and read some reviews of the soon to be available new TDI's... The new engine is supposed to be way cleaner, 40% more HP and 33% more torque, and possibly even better mileage (into the 50's highway...) Sounds like a pretty good deal all the way around.. I think they are supposed to be around 3rd qtr this year....
Sounds pretty cool to me..