New owner of a used 08 focus with 70k miles. The car runs great. My one issue is fuel efficiency, it gets between 22-26 mpg. I drive half city half highway. I never let the rpms exceed 3k and coast as much as possible. After searching the forum for answers i've replaced the fuel filter, spark plugs, air filter, cleaned MAF, topped off tires, changed oil and removed extra weight. Not sure what to try next.