Got back from a 2500 mile trip. The Edge was flawless for the entire trip. Used the ACC heavily, and the Lane Keeping somewhat. I switched back and forth the Adaptive Steering with no issues. This was a pretty evenly spread trip between flatland and mountain driving. Mountain mileage was 24.5 to 25.3 mpg and flatland was 27.5 to 29.6 which I thought was outstanding for a vehicle that was packed to the hilt. The Edge was very comfortable to drive. Used 87 gas all the way.