How to Increase Your Gas Mileage

Wallet pain at the gas pump? Learn strategies to increase your gas mileage and get the most out of every gallon.

No amount of wishful thinking will lower prices at the pump. Instead, focus on efforts that will make a difference—follow these 8 tips to increase your gas mileage and get the most out of every gallon.

1. Drop the cargo weight. Cleaning your car out isn’t just good advice from your mom—it can actually save you money on gas. As little as 100 extra pounds rattling around in your trunk can impact your fuel efficiency, according to General Motors. Keep the roadside emergency kit and spare tire, of course, but unload golf clubs, forgotten baggage, and other gear you don’t immediately need.


2. Use rear-mounted accessories. Hauling bulky items reduces your gas mileage, no question. When it can’t be avoided, minimize the impact with rear-mounted cargo boxes. These reduce your fuel economy by 1-5% at highway speeds, but that’s a huge improvement to the whopping 6-17% reduction from top-mounted roof racks and cargo boxes.


3. Don’t idle. Idling is bad for the environment and for your wallet, using a quarter to half gallon of fuel per hour (or about 1-2 cents per minute), according to Idling consumes more fuel than restarting your car, plus your car gives off 80% more pollution when idle. Any time you’re at a full stop and it’s safe to do so, turn off your engine to save money on gas.


4. Keep your speed in check. The most fuel efficient highway speed is around 50 mph, and your efficiency declines as your speed increases. To maximize every gallon, use cruise control when you can—hitting the brakes and gas pedal hard quickly eats up fuel. According to AAA, reducing your highway speed by 5 to 10 mph can boost your fuel economy by 7-14%.


5. Check your tires. Underinflated tires can increase fuel consumption by as much as 3%. That may not sound like a lot, but like price increases at the pump, it adds up fast! Make sure you’re driving with properly aligned tires at the correct PSI. Bonus: your tires will wear down less quickly, saving you additional dollars.


6. Stay on top of maintenance. Sometimes you have to spend money to save money. Make sure your car is regularly maintained. The National Institute for Automotive Service Excellence reports that bad spark plugs, for instance, can decrease fuel economy by as much as 30%. Properly maintained, even older vehicles keep their fuel efficiency for years.


7. Plan your route. Make a tank of gas last longer when you group errands based on their location. Plan ahead and bundle activities like shopping and banking for fewer trips overall. Set location-based reminders on your phone to avoid back-and-forth excursions to the same area.


8. Check maps for delays. As a best practice, pull up Google Maps before you leave and make sure there aren’t any traffic delays that will leave you idling or stopping and starting in traffic for hours.


You don’t have to stop driving altogether or revamp all your automotive habits to spend less money on fuel. Try a few adjustments from the list above to increase your gas mileage and have a positive impact on your bottom line.


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