How to Get Better Gas Mileage

By: Ed Piotrowski  | 
Woman smiling as she pumps gasoline into her car.
Getting better fuel economy is easy if you follow a few simple driving rules. See pictures of fuel-efficient small cars: Image Gallery: Small and Tiny Cars

As gasoline prices continue to rise, many consumers are demanding more fuel-efficiency in their cars and trucks. Many automakers have responded by offering gas-sipping hybrid cars and electric vehicles. But consumers who have four years of payments left on a gas-guzzling, V8-powered SUV are surely wondering how to get better gas mileage.

Fortunately, there are a number of ways that new or used vehicle owners can reduce their overall fuel consumption by as much as 20 percent. For a vehicle that averages 18 miles per gallon, that's an improvement of almost 4 mpg and an annual fuel savings of $400 or more! Let's explore how the experts improve gas mileage!

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How to Improve Your Fuel Economy

Consumer Guide®'s recommendations for getting better gas mileage may seem like no-brainers, but they really can make a difference. Our strategy is a three-prong approach: Alter your driving style, maintain your vehicle, and modify your driving mentality. Combine any of these tips, and you should start seeing an improvement right away.

Alter Your Driving Style

  • Drive slower. Going fast is so tempting. Not only do we do it to keep up with the flow of traffic, but if we can save even five minutes, it seems worth it. But slower speeds make a big difference. With regards to highway speeds, driving 60 miles per hour instead of 70 mph will save you 2-4 miles per gallon over the duration of your trip.
  • Take it easy on the throttle. Don't engage in rapid acceleration or stomp on the brakes. Coast to a stop and utilize cruise control when you can. You'll save on fuel as well as wear and tear on your brakes, which will save you even more money.
  • Shut down. If you're waiting somewhere for a while, like at a train crossing for instance, turn off your engine. Even if it's just for a minute, it can make a difference in your fuel economy, especially if you drive in the city a lot.
  • Don't warm up your vehicle for more than 30 seconds. This is a tough one, especially for us here at Consumer Guide®, where Chicago's frigid winters are a way of life. Thanks to technology, however, most modern fuel-injected cars only really need 30 seconds to warm, and hot air can start blasting into the cabin very shortly thereafter.
  • Windows up. Again, this is tough, especially on pleasant days. But having the windows down creates aerodynamic drag that causes an engine to work harder. On the highway, this can reduce fuel efficiency by up to 10 percent.
Hands using a device to pump air into a car's tires.
Keeping your tires properly inflated will save you gas.

Maintain Your Vehicle

  • Check your tire pressure. Making sure your vehicle's tires are set to the recommended pressure can increase fuel economy by as much as 3.3 percent.
  • Breathe easy. Next time you get your oil changed, have the air filters checked as well. Replacing a dirty air filter with a clean one can save up to 10 percent on fuel costs.
  • Make sure your vehicle is in top running order. Read your owner's manual and follow the manufacturer's recommended maintenance schedule. If it's time for a tune up, do it and you can realize up to a 4.1 percent increase in fuel efficiency.
  • Buy the right gas. Your owner's manual will list the correct octane gasoline you should use for your vehicle. Purchase whatever is recommended and no more. Premium-grade fuel is more costly and won't improve economy in vehicles designed to run on regular.
  • Lighten up. The less weight in your vehicle, the better your fuel economy. Clean out that trunk!
  • Grease up. Using the manufacturer's specified motor oil, and changing it per factory recommendations, can improve fuel economy as well.
A four-door sedan parked on a grey background with its trunk open.
Keep your trunk empty. Carrying extra cargoaround might be costing you at the pump.

Modify Your Driving Mentality

  • Combine trips. Don't run out two or three times a day. Hit all the stores you need to visit at once, and if possible, go to shopping malls where you can park and walk to several stores at the same time.
  • Let someone else drive sometimes.
  • Get some exercise. If you have the time and your destination is close, walk or ride a bike.
  • Cool down. Gas up on cool mornings. Fuel is denser when cold. Gas pumps measure by volume, so if you pump when it's cold, you get more gas for your buck.

The Biggest Savings

For most of you, altering your driving style and maintaining your vehicle might seem like enough to increase fuel economy. You're likely to see perhaps a 10-15 percent improvement in fuel economy by doing those two things. However, you can save the most money by changing your driving mentality.

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Consider this: If you get 16 mpg right now and you follow the steps outlined in "Altering Your Driving Style" and "Maintain Your Vehicle," you're likely to notice a 15 percent improvement in your fuel economy. That means you'll average 17.6 mpg. Over a 12,000-mile year, that's a cash savings of about $200.

By following the steps in "Modifying Your Driving Mentality" you could easily reduce the miles you drive each year by 1000. All else being equal, reducing the miles driven per year from 12,000 to 11,000 will save you $375. Combine the two, and you can reduce your annual fuel costs by $500 or more.

Next, we'll look at what you need to know about buying a more fuel-efficient vehicle. We'll look at gas-electric hybrids, as well as conventional vehicles that will allow you to squeeze out the most miles per gallon.

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How to Buy a Fuel-Efficient Vehicle

How to Go Green: Discover more fuel-efficient cars with Planet Green's green car article.

While our tips should help you realize an increase in fuel economy for your current vehicle(s), there's no substitute for owning a car that's easy on gas from the day you buy it. If you're in the market for a new vehicle, there are many fuel-efficient choices across a variety of classes.

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The most obvious choices for fuel-efficient vehicles are hybrids. Hybrids use a gasoline engine as their main power source, and they also have an electric motor for additional energy. The electric motor assists the gas engine during acceleration, instantly starts the gas engine at stoplights, and charges the batteries while decelerating and braking.

There also are exhaust emission benefits from the hybrid system shutting off the gas engine while at stoplights. Further, purchasing a hybrid qualifies you for a tax credit. Depending on the vehicle, the credit can save you several hundred dollars.

A Toyota Prius driving on the highway.
The EPA estimates that the Toyota Prius averages 60 miles per gallon during city driving and 51 mpg on the highway.

Toyota Hybrids

The Toyota Prius was the first mass-produced hybrid car sold in the United States, and it continues to be extremely popular. In Consumer Guide®'s tests, we averaged 36.7-45.2 mpg. That's a far cry from the EPA estimates of 60 mpg city/51 mpg highway, but it's still better than just about any other vehicle we've ever tested. We'll have a more detailed chart of gas sippers on the next page.

Toyota's other hybrid vehicles include the Camry midsize sedan. Like Prius, Camry pairs a four-cylinder engine with an electric motor. The Highlander midsize SUV also has a hybrid model. It combines its electric motor with a V6 engine and is geared to be a "performance" model. It's quicker than conventional Highlanders, but it's also more fuel-efficient.

Toyota's premium Lexus division also offers hybrid models. The RX 400h midsize SUV is similar to the Highlander with its V6 engine/electric motor combination. Like the Highlander, it's meant to be a fuel-efficient SUV that also offers good acceleration performance. Also fitting this mold is the GS 450h. It also combines a V6 engine with an electric motor. Toyota also offers a vast range of electric cars, if you're ready to ditch gas altogether!

Other Hybrids

Though Toyota may have the largest overall lineup of hybrids, other automakers offer vehicles with gas-electric technology. Honda, Ford, and General Motors are hoping for a piece of this ever-growing pie.

Honda's hybrid lineup includes versions of its popular Civic and Accord sedans. Ford offers its Escape and Mercury Mariner compact SUVs. General Motors' Saturn division introduced a hybrid version of its Vue SUV, dubbed "Green Line." Chevrolet has also joined the hybrid scene.

Saturn Vue Greenline driving on a highway.
Saturn's first hybrid was the 2006 Vue Green Line.

Hybrids aren't for everyone, however. They tend to carry a steep price premium over conventional gasoline vehicles. For example, a front-wheel drive 2024 Toyota Highlander has a base price of $40,970. Factoring in tax credits and fuel savings, it would take most hybrid owners five years or more to recoup the cost difference between their vehicles and conventional ones. However, with owning a hybrid comes the personal satisfaction that you're doing something positive for Mother Nature, and that's something not for sale.

Electric Vehicles

Speaking of which, electric vehicles (EVs) have surged in popularity as consumers increasingly prioritize sustainability and technological innovation. Leading the charge is Tesla with its Model 3, known for its impressive range and high-performance features. This vehicle blends luxury with practicality, offering advanced autopilot capabilities and a minimalist interior dominated by a large touchscreen interface. Tesla's influence is evident in its commitment to improving battery technology and expanding global charging infrastructure.

Another notable contender is the Chevrolet Bolt EV, which presents a more accessible entry point into the electric vehicle market. Its compact design is ideal for urban environments, while still providing substantial range and rapid charging capabilities. The Bolt EV is often praised for its roomy interior and smooth ride, making it an excellent choice for daily commuting. Together, these models reflect the dynamic evolution of the electric vehicle landscape, highlighting a shift towards cleaner, more efficient automotive technology.

Efficient Conventional Vehicles

Subcompact cars are an emerging force affecting the American automotive landscape. These small vehicles typically have wheelbases of 100 inches or less. Many are available in a hatchback body style, which enhances cargo versatility. Sedans also are available.

In addition to these vehicles being frugal at the pump, subcompacts also don't have steep bottom lines. With this market segment getting more attention from shoppers, automakers are designing these vehicles to not only be fuel efficient, but also stylish, refined, and fun to drive.

But again, such small cars don't suit everyone's lifestyle. Fear not, for there are other vehicles that have conventional engines and incorporate technology to help them be more fuel-efficient. One such technology is cylinder deactivation. An onboard sensor is programmed to sense certain driving conditions, such as coasting, cruising, or deceleration. It will then tell the engine to shut off half of its cylinders. Less active cylinders mean less fuel is being burned. This fuel-saving technology is employed by several automakers, including General Motors and Honda.

On the next page, we'll give you a list of vehicles that are among the thriftiest you can buy, conventional or hybrid.

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Explore Fuel-Efficient Vehicles By Class

With an online search, you can find the top fuel-efficient vehicles, from conventional and hybrid to electric, as rated by the EPA and in Consumer Guide® road tests.

In this age of continually climbing gas prices, consumers need to learn how to save gas any way they can. With the tips outlined in this article, saving fuel and money can be easy.

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This article was updated in conjunction with AI technology, then fact-checked and edited by a HowStuffWorks editor.

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