I average around 24-25 on mine. If I'm travelling only highway, then it hits 28 easy, with the A/C on. However, I nearly ran out of gas just the other day because I was going faster than usual on the highway - about 85 with the A/C on - and apparently that really ate my gas. I only got 20.5 miles per gallon on that tank, which is the lowest I've ever had. So typically I get about 350-360 miles on one tank of gas, and I can get over 400 on the highway.
