Originally Posted by aeoporta
The figure presented of 5000 is not valid in comparison to the vehicles named
Your hypothesis was that poor epa numbers equates to more money out of pocket
If the impreza does not get its epa number then it cost more to fill her up
however the vehicles you have chosen to compare the impreza use premium fuel
Your interpretation of the calculations (not a hypothesis), is mistaken. The calculations refer to the fact that the Impreza really gets mpg's of the other vehicles listed, and their EPA highway figure is consistently 30. Therefore the actual EPA figure should be 30, not 36. The $5,000+ refers to the additional money spent on the Impreza at the realistic 30 mpg compared to the claimed 36 mpg. It has nothing to do with the other vehicles use of premium. It is simply the extra gasoline used by the Impreza based on real world calculations.
Also, AWD is in the calculations. It doesn't matter, just like it doesn't matter if it's a automatic, CVT, or manual. The EPA tests take all that into consideration. The manual versions of cars get different mpg's from the automatics, just like the 2WD versions get different mpg's from the AWD's.