My wife and I are currently on a 1100 mile roadtrip one way from Denver,CO to Beaumont,TX (still in TX at the moment). I got off a night shift so the wife drove the first 6-7hrs. The car wasnt too packed, one suitcase and i left my 10" sub in the trunk. She was drive between 75-80 and according to the car we got about 24mpg. I drove the rest of the way and got 25mpg driving 70-75. 2 days ago, I pulled the fused for my amp, and we drove 27xmiles, and got 27mpg driving 65-70! So, I'm considering taking the 19hr drive home at 65-70 for the extra MPG.... just thought I'd give road trip info report. FYI, my car is a 2012 wrx limited, stock wheels and tires, 6,xxx miles.