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URLhttps://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/
Last Crawled2026-03-28 18:17:45 (22 days ago)
First Indexed2022-11-22 01:54:21 (3 years ago)
HTTP Status Code200
Meta Title5 Ways to Get Better Gas Mileage Right Now
Meta DescriptionA few simple steps can help you improve how many miles per gallon of gas your car gets. These tips can reduce costs and reduce your carbon footprint.
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A few simple steps can help you get the most out of every gallon Douglas Sacha/Getty Images By Myles Kornblatt, Published September 10, 2021 Improving how many miles per gallon of gas your automobile gets makes a difference to your wallet and to the environment. It’s easy to increase your vehicle’s mileage when you make a big commitment like buying a new hybrid or bolting on aerodynamic body panels. But even small changes in how you drive and maintain your current automobile can make a difference: Upping your car’s average miles per gallon from 27 to 30, for example, would be like getting every 10th fill-up for free. And if you drive 20,000 miles per year, it would save nearly 75 gallons of fuel. “Many consumers consider fuel economy when purchasing a vehicle, but they also need to consider that their fuel economy is heavily influenced by many different factors that are within their control, such as speed and driving style,” says Stacy Davis, the principal investigator of the Fuel Economy Information program at the U.S. Department of Energy's Oak Ridge National Laboratory (ORNL). Try these tips and smart strategies to increase your car’s gas mileage. They add up down the road. 1. Check the tires The wheels and tires are the feet and shoes of your car, and for all the running around you do, this is a great place to begin when looking to improve your car’s fuel efficiency. Start by checking the pressure on your car’s tires monthly. Many new vehicles will provide this data as part of their information readouts in the car, and a manual tire pressure gauge costs only a few dollars.   The pressure is measured in pounds per square inch (PSI), and heat is a major factor. Your owner’s manual will give you a cold PSI rating, which is what your tires should read in the morning before they heat up from driving and friction. Be wary of the myth that over-inflated tires will yield big fuel economy returns. It’s really marginal at best. But under-inflated tires can both lower fuel economy and produce uneven wear.  Also remember, when the weather turns cold, the denser air will make tire pressure automatically drop. So check the PSI after the first cold snap and add air if necessary.   2. Consider a tune-up If the tires are the shoes of your car, then your motor is the heart and the veins. In the same way a poor diet makes you lethargic, neglecting maintenance means your car is not getting the right diet of air, fuel and spark mixture. A healthy car will run better, and it also knows how to be more efficient with every gallon of gas.  If you’re a bit handy, an afternoon tune-up changing spark plugs, wires and the air filter can improve fuel efficiency. A few advanced jobs, like cleaning the mass air-flow sensor or changing a belt can help, too. But don’t feel compelled to do any of this yourself; it’s fine to take these jobs to a trusted mechanic for a general tune-up.  3. Watch your speed Those who remember the national 55 mph speed limit days may recall that the first motivation for this was fuel savings. In today’s world, going above the legal 65-70 mph on many interstates will significantly reduce fuel mileage. According to FuelEconomy.gov, there’s an average 14 percent decrease in fuel efficiency from 60 to 70 mph and an additional 15.4 percent decrease when going from 70 to 80 mph. This happens because the vehicle is not only working harder to achieve the extra speed, but it also has to combat additional wind resistance. 4. Strive for smooth and steady driving Even if you don’t feel like slowing down, how you get to the higher speeds matters, too. Aggressive stop-and-go driving is asking the car to work its hardest to achieve any desired speed. We all watch our speedometer, but in this case, it’s worth also watching the tachometer. (It’s the other large dial often right next to the speedometer.) Mashing the accelerator to the floor will show a rapid increase, and it’s letting you know that each cylinder is cycling thousands of times more per minute — and each cycle means more fuel is being used. An ORNL study published by SAE International found that “aggressive behavior behind the wheel can lower gas mileage in light-duty vehicles by about 10 to 40 percent in stop-and-go traffic and roughly 15 to 30 percent at highway speeds. This can equate to losing about $0.25 to $1 per gallon.” 5. Get rid of junk in the trunk If you are one of those people who uses their car like a storage unit, the extra weight can be like driving with an extra passenger at all times. A vehicle that has to work harder will be less efficient. Take some time now to  clean out your car,  and try not to let things pile up over time. But don’t take weight cutting to an extreme. If you live in a snowy area, for example, then it’s still good to carry your traction-ready kitty litter in the winter. Just don’t forget to take it out in the summer. You can leave the spare tire, but the paint cans will have a better home on the garage shelf.  Myles Kornblatt is a contributing writer who writes about cars and the auto industry. His work has appeared in publications such as  Top Gear ,  Classic Cars ,  Classic Car Weekly ,  Hemmings Daily  and  Octane . He is also the author of  Mercedes W113: The Complete Story . More on auto
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[Continue](https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/) [Cancel](https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/) [Auto](https://www.aarp.org/auto/) # 5 Ways to Get Better Gas Mileage Right Now ## A few simple steps can help you get the most out of every gallon ![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![silver SUV on the road](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_image/articlecontentfragme/cfimage.coreimg.75.1440.jpeg/content/dam/aarp/auto/2021/09/1140-suv-on-the-road.jpg) Douglas Sacha/Getty Images - [Facebook](http://www.facebook.com/sharer/sharer.php?u=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/) - [Twitter](http://twitter.com/intent/tweet?url=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/&related=CreateTheGood&text=5%2520Ways%2520to%2520Get%2520Better%2520Gas%2520Mileage%2520Right%2520Now) - [LinkedIn](https://www.linkedin.com/shareArticle?mini=true&url=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/&title=5%2520Ways%2520to%2520Get%2520Better%2520Gas%2520Mileage%2520Right%2520Now) By Myles Kornblatt, [En español](https://www.aarp.org/espanol/hogar-familia/transporte-comunidades/info-2021/consejos-mejorar-rendimiento-gasolina-auto.html) Published September 10, 2021 Improving how many miles per gallon of gas your automobile gets makes a difference to your wallet and to the environment. It’s easy to increase your vehicle’s mileage when you make a big commitment like buying a new hybrid or bolting on aerodynamic body panels. But even small changes in how you drive and maintain your current automobile can make a difference: Upping your car’s average miles per gallon from 27 to 30, for example, would be like getting every 10th fill-up for free. And if you drive 20,000 miles per year, it would save nearly 75 gallons of fuel. Members only [healthcare/wellness-and-longevity/aging-well/staying-sharp]() [Learn about how lifestyle impacts memory Learn how the mind forms and retrieves memories with the Memory Loss – Is It Inevitable? challenge from AARP® Staying Sharp®.](https://stayingsharp.aarp.org/challenges/memory-loss-is-it-inevitable/) Members only “Many consumers consider fuel economy when purchasing a vehicle, but they also need to consider that their fuel economy is heavily influenced by many different factors that are within their control, such as speed and driving style,” says Stacy Davis, the principal investigator of the Fuel Economy Information program at the U.S. Department of Energy's Oak Ridge National Laboratory (ORNL). Try these tips and smart strategies to increase your car’s gas mileage. They add up down the road. ### **1\. Check the tires** The wheels and tires are the feet and shoes of your car, and for all the running around you do, this is a great place to begin when looking to improve your car’s fuel efficiency. Start by [checking the pressure on your car’s tires monthly.](https://www.aarp.org/auto/car-maintenance-safety/summer-road-trip-car-repair-tips/ "checking your tire pressure should be a part of routine maintenance") Many new vehicles will provide this data as part of their information readouts in the car, and a manual tire pressure gauge costs only a few dollars. The pressure is measured in pounds per square inch (PSI), and heat is a major factor. Your owner’s manual will give you a cold PSI rating, which is what your tires should read in the morning before they heat up from driving and friction. Be wary of the myth that over-inflated tires will yield big fuel economy returns. It’s really marginal at best. But under-inflated tires can both lower fuel economy and produce uneven wear. Also remember, when the weather turns cold, the denser air will make tire pressure automatically drop. So check the PSI after the first cold snap and add air if necessary. ### **2\. Consider a tune-up** If the tires are the shoes of your car, then your motor is the heart and the veins. In the same way a poor diet makes you lethargic, neglecting maintenance means your car is not getting the right diet of air, fuel and spark mixture. [A healthy car will run better,](https://www.aarp.org/auto/car-maintenance-safety/diy-maintenance/ "DIY maintenance tips") and it also knows how to be more efficient with every gallon of gas. ARTICLE CONTINUES AFTER ADVERTISEMENT - [Facebook](http://www.facebook.com/sharer/sharer.php?u=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/) - [Twitter](http://twitter.com/intent/tweet?url=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/&related=CreateTheGood&text=5%2520Ways%2520to%2520Get%2520Better%2520Gas%2520Mileage%2520Right%2520Now) - [LinkedIn](https://www.linkedin.com/shareArticle?mini=true&url=https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/&title=5%2520Ways%2520to%2520Get%2520Better%2520Gas%2520Mileage%2520Right%2520Now) If you’re a bit handy, an afternoon tune-up changing spark plugs, wires and the air filter can improve fuel efficiency. A few advanced jobs, like cleaning the mass air-flow sensor or changing a belt can help, too. But don’t feel compelled to do any of this yourself; it’s fine to take these jobs to a trusted mechanic for a general tune-up. ### **3\. Watch your speed** Those who remember the national 55 mph speed limit days may recall that the first motivation for this was fuel savings. In today’s world, going above the legal 65-70 mph on many interstates will significantly reduce fuel mileage. According to FuelEconomy.gov, there’s an average 14 percent decrease in fuel efficiency from 60 to 70 mph and an additional 15.4 percent decrease when going from 70 to 80 mph. This happens because the vehicle is not only working harder to achieve the extra speed, but it also has to combat additional wind resistance. Members only [Work & Finances]() [Indeed Job Board Find job listings that match your experience with help from AARP and Indeed](https://www.aarp.org/membership/benefits/jobs/job-board/) Members only ### **4\. Strive for smooth and steady driving** Even if you don’t feel like slowing down, how you get to the higher speeds matters, too. Aggressive stop-and-go driving is asking the car to work its hardest to achieve any desired speed. We all watch our speedometer, but in this case, it’s worth also watching the tachometer. (It’s the other large dial often right next to the speedometer.) Mashing the accelerator to the floor will show a rapid increase, and it’s letting you know that each cylinder is cycling thousands of times more per minute — and each cycle means more fuel is being used. An ORNL study published by SAE International found that “aggressive behavior behind the wheel can lower gas mileage in light-duty vehicles by about 10 to 40 percent in stop-and-go traffic and roughly 15 to 30 percent at highway speeds. This can equate to losing about \$0.25 to \$1 per gallon.” ### **5\. Get rid of junk in the trunk** If you are one of those people who uses their car like a storage unit, the extra weight can be like driving with an extra passenger at all times. A vehicle that has to work harder will be less efficient. Take some time now to [clean out your car,](https://www.aarp.org/home-family/your-home/info-2021/things-to-throw-away.html "things to throw away") and try not to let things pile up over time. But don’t take weight cutting to an extreme. If you live in a snowy area, for example, then it’s still good to carry your traction-ready kitty litter in the winter. Just don’t forget to take it out in the summer. You can leave the spare tire, but the paint cans will have a better home on the garage shelf. [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![limited-time flash sale yellow gradient background with light rays​​](https://cdn.aarp.net/content/dam/experience-fragments/uxdia-folder-structure/en/next-action-widgets/membership-promo-naw/default/anonymous/_jcr_content/root/responsivegrid/container_copy/articleimage.coreimg.75.1140.jpeg/content/dam/aarp/members/2026/q1-membership-sale-2026/1140x655-fy26-q1-flashsale.jpg)](https://join.aarp.org/ORGARTJ?&defaultoffer=60&rd%252060) Flash Sale — AARP Membership Offer Join AARP for only \$11 per year with a 5-year membership. Get instant access to members-only products and hundreds of benefits, a free second membership, and a subscription to *AARP The Magazine.* [Join AARP](https://join.aarp.org/ORGARTJ?&defaultoffer=60&rd%252060) ARTICLE CONTINUES AFTER ADVERTISEMENT *Myles Kornblatt is a contributing writer who writes about cars and the auto industry. His work has appeared in publications such as* Top Gear*,* Classic Cars*,* Classic Car Weekly*,* Hemmings Daily *and* Octane*. He is also the author of* Mercedes W113: The Complete Story*.* More on auto [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![stressed man man leans over open hood of car checking engine after breaking down on the road](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_body3/container_body_cf/container_additional_3/container_2123475527/featuredlist/tabItem/extended-warranty-cost-vs-coverage1.coreimg.50.932.jpeg/content/dam/aarp/auto/2021/05/1140-car-breakdown.jpg)](https://www.aarp.org/auto/car-maintenance-safety/extended-warranty-cost-vs-coverage/ "Is an Extended Car Warranty Worth the Cost?") [Is an Extended Car Warranty Worth the Cost?](https://www.aarp.org/auto/car-maintenance-safety/extended-warranty-cost-vs-coverage/) [Questions to ask before signing a contract](https://www.aarp.org/auto/car-maintenance-safety/extended-warranty-cost-vs-coverage/) [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![auto safety checklist](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_body3/container_body_cf/container_additional_3/container_2123475527/featuredlist/tabItem/safety-checklist2.coreimg.50.932.jpeg/content/dam/aarp/auto/2017/03/1140-auto-safety-checklist-hp-promo.jpg)](https://www.aarp.org/auto/car-maintenance-safety/safety-checklist/ "Your Car-Safety Checklist") [Your Car-Safety Checklist](https://www.aarp.org/auto/car-maintenance-safety/safety-checklist/) [10 checks you can do yourself, on cars old and new](https://www.aarp.org/auto/car-maintenance-safety/safety-checklist/) [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![a man and woman drive in a car](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_body3/container_body_cf/container_additional_3/container_2123475527/featuredlist/tabItem/summer-road-trip-car-repair-tips3.coreimg.50.932.jpeg/content/dam/aarp/auto/2021/07/1140-summer-road-trip.jpg)](https://www.aarp.org/auto/car-maintenance-safety/summer-road-trip-car-repair-tips/ "9 Car Maintenance Tips for a Safe Summer Road Trip ") [9 Car Maintenance Tips for a Safe Summer Road Trip](https://www.aarp.org/auto/car-maintenance-safety/summer-road-trip-car-repair-tips/) [This checklist will help get your vehicle in tip-top shape](https://www.aarp.org/auto/car-maintenance-safety/summer-road-trip-car-repair-tips/) { "maxItems":3, "itemsPerRow":"3", "rows":"4", "loadMore":"6", "adsNum":"0", "resultsLength":"3" } Unlock Access to AARP Members Edition [Join AARP to Continue](https://appsec.aarp.org/mem/join?campaignID=UBJFMOA23&intcmp=MEM-ONLY-ACCESS) Already a Member? [Login](https://secure.aarp.org/applications/user/login?promo=MOA&intcmp=MEM-ONLY-ACCESS) ARTICLE CONTINUES AFTER ADVERTISEMENT ## Conversation Follow this conversation to be notified when new comments are postedfollow Log in \| Register ![Jump to log in or sign Up](https://cdn.viafoura.net/assets/defaultavatar.913f94a2fa72a280b0374131f1c9b175.png) All Comments9 NEWEST **0** ### All Comments 1. #### Comment by 763ItEOME. 76 763ItEOME December 26, 2021 Ask your dealership to recalibrate your dash and place your car or truck permanently in a more efficient mode and begin driving on a drive ability insurance program. Make sure your Engine Computer Module is properly set to your tire size.edited reply 3 share report 0 0 older replies show older replies 2. #### Comment by 2Papa. 2P 2Papa November 18, 2021 My Dodge Hellcat would get better mileage if I could only stop drag racing everyone that will take me on\! reply 2 share report 0 0 older replies show older replies 3. #### Comment by geoffh886267. ge geoffh886267 September 18, 2021 Using cruise control when on the freeway (outside of rush-hour traffic) improves gas mileage. reply 6 share report 0 0 older replies show older replies 4. #### Comment by rj3751. rj rj3751 September 17, 2021 Hard starting from a stop can waste gas so a lot of people go to the extreme in the other direction and take a long time to get up to speed. This also wastes gas. You get your best gas mileage when you are going at a constant speed, so you should accelerate quickly but not hard and try to stay at a constant speed and use the law of inertia to your benefit. reply 7 share report 0 0 older replies show older replies 5. #### Comment by Doych. Do Doych September 16, 2021 I can't believe these gas (or electric) saving articles never mention "Pay attention to the stoplights ahead of you!!" If the light is red, take your fricken foot off the gas and coast in to the stoplight! Every day I see cars speeding right up to the Red Stoplight, and hitting the brakes hard (and wearing them out)! My wife does this all the time...... her foot is either on the gas or the brake! And she wonders why she needs a brake job often\! Read more reply 1 reply 6 share report 0 0 older replies show older replies - #### Reply by ToddC605460. To ToddC605460 March 6, 2023 Reply to Doych Indeed! And anticipating stops means your brakes last longer too. My 2009 Toyota Yaris has 170,000 miles on it and 80% of the original brakes\! reply 0 share report Load more comments Powered by { "articlePagePath" :"/content/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips", "aarpId" : "4473024613b0a44d9150739bbf31ccaa" "customContainerId" : "" "limit" : "5" "paginationLimit" : "5" "replyLimit" : "2" "paginationReplyLimit" : "5" "sort" : "" "featuredTabActiveThreshold" : "5" } Benefits Recommended For You [See All](https://www.aarp.org/membership/benefits/all-offers-a-z/ "See All") [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![Illustration of a man holidng a giant magnifying glass looking at the word job on a peach background](https://aarp.widen.net/content/id6geovwrm/png/DBR_IndeedJobBoard_07302025.png?anchor=0%2C0&color=ffffffff&u=w1npqh) Members only Work & Finances Indeed Job Board Find job listings that match your experience with help from AARP and Indeed](https://www.aarp.org/membership/benefits/jobs/job-board/) [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![](https://aarp.widen.net/content/yagrlj5ef4/jpeg/DBR_UniversalHollywoodCourtesy_01122026.jpg?anchor=0%2C0&q=80&color=ffffffff&u=w1npqh) Members only Entertainment Universal Studios Hollywood Up to 10% off tickets](https://www.aarp.org/membership/benefits/entertainment/universal-studios-hollywood/) [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![](https://aarp.widen.net/content/eebtqiq1ox/jpeg/DBR_PersonalTechResourceCenter_12292025.jpg?anchor=0%2C0&q=80&color=ffffffff&u=w1npqh) Members only Home & Technology AARP Personal Technology Resource Center The latest articles, tips, reviews and videos to help you stay tech savvy](https://www.aarp.org/membership/benefits/tech/aarp-personal-technology-resource-center/) [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![Family sitting in the trunk of their SUV at the beach](https://aarp.widen.net/content/onzqz0qm3g/jpeg/1140x655-montway-auto-transport-family-sitting-in-trunk-of-suv-at-the-beach.jpeg?position=c&color=ffffffff&quality=99&u=w1npqh) Members only Home & Technology Montway Auto Transport Up to \$100 off car shipping](https://www.aarp.org/membership/benefits/home-life/montway-auto-transport/) [See All](https://www.aarp.org/membership/benefits/all-offers-a-z/ "See All") [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) Members only](https://www.aarp.org/auto/car-maintenance-safety/gas-mileage-tips/) [HOT DEALS](https://www.aarp.org/membership/benefits/hot-deals/ "See All Hot Deals") SAVE MONEY WITH THESE LIMITED-TIME OFFERS [See All Hot Deals](https://www.aarp.org/membership/benefits/hot-deals/ "See All Hot Deals") AARP is a nonprofit, nonpartisan organization that empowers people to choose how they live as they age. 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A few simple steps can help you get the most out of every gallon ![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![silver SUV on the road](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_image/articlecontentfragme/cfimage.coreimg.75.1440.jpeg/content/dam/aarp/auto/2021/09/1140-suv-on-the-road.jpg) Douglas Sacha/Getty Images By Myles Kornblatt, Published September 10, 2021 Improving how many miles per gallon of gas your automobile gets makes a difference to your wallet and to the environment. It’s easy to increase your vehicle’s mileage when you make a big commitment like buying a new hybrid or bolting on aerodynamic body panels. But even small changes in how you drive and maintain your current automobile can make a difference: Upping your car’s average miles per gallon from 27 to 30, for example, would be like getting every 10th fill-up for free. And if you drive 20,000 miles per year, it would save nearly 75 gallons of fuel. “Many consumers consider fuel economy when purchasing a vehicle, but they also need to consider that their fuel economy is heavily influenced by many different factors that are within their control, such as speed and driving style,” says Stacy Davis, the principal investigator of the Fuel Economy Information program at the U.S. Department of Energy's Oak Ridge National Laboratory (ORNL). Try these tips and smart strategies to increase your car’s gas mileage. They add up down the road. ### **1\. Check the tires** The wheels and tires are the feet and shoes of your car, and for all the running around you do, this is a great place to begin when looking to improve your car’s fuel efficiency. Start by [checking the pressure on your car’s tires monthly.](https://www.aarp.org/auto/car-maintenance-safety/summer-road-trip-car-repair-tips/ "checking your tire pressure should be a part of routine maintenance") Many new vehicles will provide this data as part of their information readouts in the car, and a manual tire pressure gauge costs only a few dollars. The pressure is measured in pounds per square inch (PSI), and heat is a major factor. Your owner’s manual will give you a cold PSI rating, which is what your tires should read in the morning before they heat up from driving and friction. Be wary of the myth that over-inflated tires will yield big fuel economy returns. It’s really marginal at best. But under-inflated tires can both lower fuel economy and produce uneven wear. Also remember, when the weather turns cold, the denser air will make tire pressure automatically drop. So check the PSI after the first cold snap and add air if necessary. ### **2\. Consider a tune-up** If the tires are the shoes of your car, then your motor is the heart and the veins. In the same way a poor diet makes you lethargic, neglecting maintenance means your car is not getting the right diet of air, fuel and spark mixture. [A healthy car will run better,](https://www.aarp.org/auto/car-maintenance-safety/diy-maintenance/ "DIY maintenance tips") and it also knows how to be more efficient with every gallon of gas. If you’re a bit handy, an afternoon tune-up changing spark plugs, wires and the air filter can improve fuel efficiency. A few advanced jobs, like cleaning the mass air-flow sensor or changing a belt can help, too. But don’t feel compelled to do any of this yourself; it’s fine to take these jobs to a trusted mechanic for a general tune-up. ### **3\. Watch your speed** Those who remember the national 55 mph speed limit days may recall that the first motivation for this was fuel savings. In today’s world, going above the legal 65-70 mph on many interstates will significantly reduce fuel mileage. According to FuelEconomy.gov, there’s an average 14 percent decrease in fuel efficiency from 60 to 70 mph and an additional 15.4 percent decrease when going from 70 to 80 mph. This happens because the vehicle is not only working harder to achieve the extra speed, but it also has to combat additional wind resistance. ### **4\. Strive for smooth and steady driving** Even if you don’t feel like slowing down, how you get to the higher speeds matters, too. Aggressive stop-and-go driving is asking the car to work its hardest to achieve any desired speed. We all watch our speedometer, but in this case, it’s worth also watching the tachometer. (It’s the other large dial often right next to the speedometer.) Mashing the accelerator to the floor will show a rapid increase, and it’s letting you know that each cylinder is cycling thousands of times more per minute — and each cycle means more fuel is being used. An ORNL study published by SAE International found that “aggressive behavior behind the wheel can lower gas mileage in light-duty vehicles by about 10 to 40 percent in stop-and-go traffic and roughly 15 to 30 percent at highway speeds. This can equate to losing about \$0.25 to \$1 per gallon.” ### **5\. Get rid of junk in the trunk** If you are one of those people who uses their car like a storage unit, the extra weight can be like driving with an extra passenger at all times. A vehicle that has to work harder will be less efficient. Take some time now to [clean out your car,](https://www.aarp.org/home-family/your-home/info-2021/things-to-throw-away.html "things to throw away") and try not to let things pile up over time. But don’t take weight cutting to an extreme. If you live in a snowy area, for example, then it’s still good to carry your traction-ready kitty litter in the winter. Just don’t forget to take it out in the summer. You can leave the spare tire, but the paint cans will have a better home on the garage shelf. *Myles Kornblatt is a contributing writer who writes about cars and the auto industry. His work has appeared in publications such as* Top Gear*,* Classic Cars*,* Classic Car Weekly*,* Hemmings Daily *and* Octane*. He is also the author of* Mercedes W113: The Complete Story*.* More on auto [![](https://cdn.aarp.net/etc/uxdia/images/uxdia-spinner.svg) ![stressed man man leans over open hood of car checking engine after breaking down on the road](https://cdn.aarp.net/content/dam/aarpe/en/home/auto/car-maintenance-safety/gas-mileage-tips/_jcr_content/root/container_main/container_body_main/container_body3/container_body_cf/container_additional_3/container_2123475527/featuredlist/tabItem/extended-warranty-cost-vs-coverage1.coreimg.50.932.jpeg/content/dam/aarp/auto/2021/05/1140-car-breakdown.jpg)](https://www.aarp.org/auto/car-maintenance-safety/extended-warranty-cost-vs-coverage/ "Is an Extended Car Warranty Worth the Cost?") 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