First tank on 07 Sport:
31mpg mixed city/highway. Mostly city and 80mph+ highway.

Tricks: Downshifted. I downshifted to third and then second almost every chance I could. This prevented me from needing the brakes, and kept the motor deep in vacuum, where injectors are either closed or don't dump enough fuel worth mentioning.

If I were to drive slower on the highway, it'd be higher.

I'll be interested to see my highway mpg

I think I could swing 35mpg pretty easily. Probably a bit more.

 

i have 08 AT sport, i kinda drive like you but keep highway speeds around 70-75 mph and get about 32-35 mpg. i think if i drove 65 mph highway i could get 36+ mpg :-P