My 2014 TDI at 80mph in 6th gear and no traffic gets 56mpg. In moderate traffic @ 50 - 65mph I get no less than 42mpg. I am a gear head and I know you would need to adjust the fuel injection (no spark it's a diesel) to occur a little before the power stroke to get a hotter burn and reduce NOx. The problem is this will reduce performance and mpg.. both the main reasons why I bought a diesel tdi. I want my money back. once the ecu is updated to be EPA compliant the car will not perform as well and mpg not as good. I want a refund + tax , title, registration, +6% of sale to cover taxes on my new non VW vehicle purchase since I won't have a trade and be subject to full sales tax.