I have the same vehicle, you can do a little better on it. Mine has no roof rack, this can effect mileage, tire pressure should be at 30psi, and make sue your alignment is good, pulling to the side will effect mileage. Gentle take off from a stop will help and high speeds on the freeway will reduce mileage. Running the A/C will consume more gas, make sure the plugs, wire, cap/rotor and air filter is good. Don't forget on that you have a cabin filter (nothing to do with mileage, just the air you breath) hidden away behind the glove box that will be filthy dirty if it is the original.