Originally posted by: BoomerD
Maintain the car properly. Oil changes, tire pressure and rotation, use synthetic oils in all compartments, change the air filter when it needs it, not when you happen to remember. Drive between 55 and 65 for the best mileage on the highway, avoid stop/start traffic where you can, no "jackrabbit starts"...al will help to increase mileage, but none are a magic bullet to get you 35+ mpg with an engine that was built to get 20 or less...
If you're stuck with the car, you're stuck with the fuel expenses...
Have you considered public transportation coupled with a bicycle? Not the most convenient, but thousands if not millions of Americans do it daily...