Maybe consider a WRX Wagon or even an SRT4? I have both, the WRX has an STi turbo and supporting mods and I get 30mpg on road trips and about 25mpg around town.
On the SRT4 I get 32mpg on road trips and about the same 25mpg around town.
Both cars are a lot of fun to drive and IMO get great gas mileage for the performance gained.