I just calculated mine this morning and I was just under 26 mpg. The car was mostly driven on the highway, with speeds all over the place. Anywhere from 60 mph to 105 mph and the occassional aggressive driving on the back road. I may have even used the AC a couple of times as well.

This tank, I'll try to be a bit more conservative on how I drive and see if it will improve the mileage even more. I was right around 24mpg with the winter blend of fuel.