Try not to drive around with more things in your vehicle than you need. This includes items that you can carry on your luggage rack or in your trunk. This can really reduce the gas mileage that your vehicle can get, so avoid loading it down with more stuff than you have to.
Premium gas does not really give you any better gas mileage than normal unleaded gas, so unless your vehicle requires premium, use unleaded. It's usually significantly cheaper.
Driving at a constant speed can also help you out. This is why vehicles get less gas mileage in the city than they do out on the highway or the freeway. Stopping and going reduces your gas mileage a lot.
If you have to wait on someone to get out of a store or come out and get in the vehicle, just turn the engine off and wait. It will cost you less gas to start it back up than to just sit there and let the engine run.
You may not realize this, but the faster you drive, the worse your gas mileage gets. Stick tight to the speed limit or as fast as is safe under the current conditions.
Whenever you can, try to walk wherever you need to go instead of driving. Imagine how much money you will save using no gas at all.
Whenever you find that you have to go out and take care of business outside the house, such as make a bank deposit, go to the grocery store, or anything else, try to do it all at once and get it done then. Try not to take multiple trips unless you have to.
Your gas cap also needs to be sealed tight. Gasoline evaporates quickly.
Your air conditioner also uses gasoline. Use it only when you really need it.
Keep your engine tuned, since almost any problem with your engine can reduce gas mileage.
You might not realize this, but making sure all of your tires have the same and the correct amount of air in them can do wonders for your gas mileage.
