Help! I am only getting, at best, 28 mpg. I do most of my travel in city but I keep reading that many of you are getting close to 40 mpg and many of you in a variety of conditions. I have gone without AC, aired the tires, tried both using automatic and manual, use premium gas I just can't even get it to 30. Any other ideas or thoughts would be greatly appreciated? Even with this gas mileage I still love my car.