Must be how your driving it.
Must be how your driving it. I Also have a 2012 Impreza 5M and usually average about 29.0 mpg. I do have the Canadian version (because I live in Canada), but im sure the gas consumption is the same. The only difference is that there is a full color screen that shows many different statistics on how your driving, which allows a person to learn how to drive economically, and change their driving habits accordingly. I can say that I did expect better gas mileage then I get, but 700 km per tank (just under 450 miles) is about average for every tank, and I'm learning to be happy with that. I'm a 26 year old male, so don't think I drive it like a 90 year old grandma. I push it on highway on ramps, passing others, and I usually drive in an almost rushed manner...I have two speeding tickets to prove it. Some steps I take in decreasing gas mileage include paying attention to the lights ahead of me. If I see a red light in the distance I usually just let of the gas and coast, or put the gear into Neutral and coast until I feel I am going to slow or reach the light. The Subaru Manual also has some tips on more conservative driving and what speed to shift at, which all adds to better gas consumption.