I had to make a trip back home to Michigan which from where I live in Georgia was around 1700 roundtrip. My commute was all highway miles from I-16 to I-75 with cruise set to 80mph. I averaged 45MPG going to Michigan and 43MPG coming back home to Georgia. For anyone not familiar with that commute, it was fairly hilly through Georgia, only to get worse in Tennessee and Kentucky due to the steep grades in the mountains. Alittle bit into Ohio it started to flatten out for the rest of the trip. I was pretty happy with this commute and suprised that going through the steep grades I was still able to gain speed if I had to pass someone. Just thought I would share this information. This was also with the car only having 300 miles on it.