I got a 2001 TDI jetta auto about 2 months ago. Ive been getting around 42 mpg. Is there any mods out there to get any better mpg, (not that 42 is bad or anything) I drive 100 miles a day and fuel is 3. 50 up here in Alaska.
Yes, there are many folks getting more mpg.
If you have done all the standard things, tire pressure, driving like you have an egg under your foot on the skinny pedal... your mileage may be dictated by route. What I mean is, I got a standard 43mpg with the 02 on my 50 mile commute, one way, from ~280' to over 3000' back down to 50' above sea level. Going over the coast range every day the best I could squeeze out of the 02 was 43. I even took the wife's 09 one day and got the same thing that I hand calculate with the 02 on the 09s overhead 43 for the trip.