I use mine as a daily commuter. I drive 160 miles/day on open, two lane roads at 70 - 80 mph. I consistently get 27 - 28 mpg. I calculate my mpg. The mpg that the cars computer calculates is usually 2 - 3 mpg high.
I was driving a Honda Civic that got 36 - 38 mpg. The MS3 is definitely not the...