Originally Posted by jbrscot
One thing to keep in mind is the computer MPG reading and the actual calculated (miles / gallons) are not always equal...On my last one my computer said 31.2 but I calculated 29.6.
I consistently read about two under as well on calculated vs computer. On a six hour drive I just took I only got 25. I was rather disappointed at this, but it was a rather hilly and twisty drive so lots of change of speed. Maybe I should do my plugs. I just did my air filter (which was FILTHY).