Chances are, you're driving less by consolidating trips, combining errands and even carpooling to be more frugal. And while you can also be frugal when you fill up by shopping around for the best fuel prices, if you drive around all the stations looking for the best prices, the savings are moot. Instead, use the GasBuddy app. Just released (and just in time, as prices hit 15-month highs), it locates the cheapest fuel in your vicinity. When you search, you can compare distance by price and see all grade prices displayed so you never miss a bargain.
Time Your Fill-Ups
Schedule Regular Tune-Ups
The bottom line is that regular tune ups equal greater fuel efficiency. Check the filters, fluids, the spark plugs, change the oil regularly (conventional wisdom says every 3,000 miles), and make sure your tires are properly inflated (for every three pounds your tires are below their recommended pressure, your fuel economy drops 1%).
Stop Driving Aggressively!
Fuel economy is directly proportionate to how hard you accelerate and how steady you are on the accelerator. The key to better mileage? Gentle and steady. Each mile per hour over 60 miles per hour is like paying an additional 10 cents a gallon, according to the DOE; erratic acceleration and braking can waste up to 50 cents a gallon.
Skip The Premium
Unless your car requires it -- and very few do -- premium gas is money down the drain, says John Nielsen, director of AAA Approved Auto Repair Network. A lot of people are under the impression that higher octane gas will make their engines perform better -- but it almost never does, so unless you have a luxury car, or a sports car that requires premium, stick with regular unleaded and pocket the savings.