How can I get better gas mileage on my car?

Correct tire pressure Empty the trunk of any junk Periodic battery and alternator maintenance Replace spark plugs at appropriate intervals Carpool, walk or ride a bicycle Check radiator cap for proper pressurization Automatic transmission fluid level check Check for dragging brake pads Wheel alignment

Dodge Neon?? You're better of losing the engine, cutting out the floor, and using your feet like the muddafugging Flintstones

Keep your car tuned up. Keep your tires properly inflated. Don't keep a whole bunch of stuff in your car that you don't need so that you can reduce the weight as much as possible. Change your driving habits. Slow your approach to signals so that the light can turn green before you get there. Don't use the AC and keep your windows up if possible.

Get rid of the junk in the trunk. Regular car servicing like oil changes, fluid levels, Maintain the right tire pressure Turn off the engine while waiting for someone. If you live up North, you don't have to let your car sit in the driveway "heating up" for 20 minutes.

get a tune up!! that will help a bunch. and get your gas filter cleaned.

Don't exceed the speed limits, and don't do jack-rabbit accelerations.

driving the speed limit will help also avoid quick acceleration and hard breaking also make your your tires are properly inflated and make sure your car is well serviced

Switch from regular to Platinum tip spark plugs. They cost more, but will increase feul efficiency and horsepower. When doing this, I would upgrade to a Bosch Distributer cap and rotor - essentially, this is a tune-up for an injection system (not carburated). I would have a mechanic check all your seals and gaskets to make sure there are no leaks, particularly in the block of your engine. Keep tires properly inflated (this is typically about 3-5 psi below the recommended inflation, i.e. on a Neon your tires probably say 35 psi, so fill it to 32 psi). Friction results when tires meet pavement, and with friction comes heat. As heat increases, so does pressure, thus increasing psi within the tire. ALWAYS check tire pressure before a trip - NEVER during. Because of increased pressure, if you add air to a tire during a trip you can overinflate resulting in uneven wear and perhaps tire failure (blow outs). You see lots of flat tires on the highway in California during the summer for this reason. I also get better gas mileage with Chevron 91 octane (noticably more than any other maker by about 7-10 mpg). Essentially all gasoline has the same base, but what make Chevron, Shell, Unocal, etc unique is the detergents they add during the conversion process from crude to gasoline. Chevron, to me (on my Honda, Chevy and VW), has fuel with better detergents to help your engine run cleaner and more efficiently. Other than that, all you can really do is keeep your windows up, A/C off, and perhaps your heater on (the heater blows heat off the engine making it run cooler, and thereby uses less gas because it is again more efficient).

Hitch 2 mules to it.