Rock - here's part of your problem:
Fuel Tank Capacity: 16.9 gal.
This would give you about 28mpg.
Maybe I am gathering data from the wrong car?? Although I'd imagine all the tanks on the sedans would be the same size
I'm going by the manual that comes with the car.
Interestingly enough, the Touring isn't sold in the US. Strange. It is the 2.5L 170hp tho.
R35