I got 25mpg out of my last full tank. About 210 out of the 353 miles of the tank (14 gallons) were interstate/back road driving at 60-80mph average. Thats the highest mpg I've gotten since I bought the car.
The least amount I've got: 23.4mpg
the most I've got: 32.5mpg.
Last tank I got about 465 miles out of a tank. That's from full to empty. Well almost empty. Our tanks hold 17.1 gallons. When I filled up the meter read 15.9. Haha. So I had maybe a gallon left.