I haven't owned a car since 1995, and I just bought a Jetta TDI LE. I am glad that I found this site. I have learned several things already. Just filled up for the first time last night, and was a little disappionted with the initial mileage. My dealer and reserach tells me that this will get better as the engine breaks in. I do mostly interstate driving and I am hoping to average at least 40 mpg.