We test drove a 2009 Jetta TDI wagon to compare it to our 2002 TDI wagon. Our 2002 gets mileage almost 10 mpg higher than the 2009. Fit and finish are about the same. With diesel now lower priced than gas here in our state, and teh difference in mileage, we will keep running our 2002 for a long time to come. After VW screwed up and lowered the mileage, find yourself a 2002 or 2003 TDI diesel if you can and buy that instead. They command a huge price premium in our area being they are so much better than the 2009 models.
Put the engine and running gear from the 2002/2003 back into the Jetta TDI and reclaim the extra 10 mpg on the highway