Originally Posted by austinpetemo
Now why is it that my 02 focus has new oil (synthetic), new sparkplugs, new air filter, properly filled air pressure (what the tire says on the side), and on top of that the car is clean. Guess what, a straight trip from gas station to gas station, 170 miles at 65-70mph and i only got 27.1mpg......... help???
You're not doing anything wrong with your car but you are comparing apples to oranges, as they say. Specifically, your '02 doesn't have the technology in the powertrain design that the newest Focus does. (If it makes you feel any better, mine doesn't either). More "engine smarts" in the newer designs like the variable cam timing, for instance.
What engine do you have? SPI or Zetec? How many miles on it? If you want a fairer comparison, compare apples to apples. Beyond that, there's not much you can do. Drive it easy, coast to red lights... move into the slower lane etc and keep it well-maintained (sounds like you do).