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| Boilerpipe Text | AAA Connect
Blogs
Auto
Driving Tips to Help You Increase Gas Mileage
auto
March 06, 2026
6 Min Read
-- Updated March 2026 --
Article overview
Smart driving habits:
Avoid rapid acceleration, hard braking, and excessive idling to improve fuel efficiency by up to 40% in stop-and-go traffic.
Vehicle maintenance:
Regularly check tire pressure, clean air filters, and address warning lights to optimize fuel economy and extend vehicle life.
Efficient planning:
Use route planning tools, carpooling, and combine errands to reduce unnecessary trips and fuel consumption.
Lighten the load:
Remove unnecessary weight and roof racks to reduce drag and improve mileage, especially at highway speeds.
With gas prices remaining unpredictable and road trips on the rise, improving your vehicle’s fuel efficiency has never been more important. Whether you're driving a compact car, SUV or hybrid, small changes in your driving habits and maintenance routine can lead to big savings at the pump.
How to increase gas mileage: Save fuel with these easy driving tips
From planning your routes to avoiding rapid acceleration, these proven fuel-saving techniques will help you increase gas mileage, reduce emissions and keep more money in your wallet. In this updated guide, we’ll walk through the top ways to boost fuel economy—plus a few surprising facts you may not know.
Fuel is the second-largest ongoing cost of owning a vehicle, surpassed only by depreciation. But the good news? You can cut down on fuel expenses without upgrading your car. In fact, simple changes to your driving habits can lead to significant savings.
For example, avoiding aggressive acceleration and hard braking can improve your gas mileage by as much as
40% in stop-and-go traffic
, according to the
U.S. Department of Energy’s FuelEconomy.gov
. With national average gas prices hovering around
$3.50 per gallon
in mid-2025, that kind of improvement adds up fast.
AAA Members can save money on every fill-up at Shell with the Shell® Fuel Rewards® program.
Get discount info
Calculate your miles per gallon (MPG)
Are you wondering what your vehicle’s MPG is? Use our calculator to see how you’re doing and then check in from time to time to see if you’re making any progress on increasing your gas mileage.
Find Your Vehicle’s Fuel Efficiency
Miles Driven:
Gallons Used:
Top tips to increase gas mileage
Here are our top
eco-driving tips
to help you increase gas mileage, which, in return, will save you money at the pump.
1. Route planning and carpooling
Before you leave your garage or
parking spot
, doing some
route planning
is a smart way to boost overall fuel efficiency. Using apps like Google Maps, Waze and
AAA TripTik®
can help you to avoid traffic congestion, road closures and construction zones that can waste fuel due to longer periods of idling and stop-and-go driving.
Another way to save on gas use is to
group errands
into one trip and plan out your stops in a loop rather than making multiple back-and-forth trips. This helps because starting your car when the engine is cold uses more fuel, so combining trips reduces the number of cold starts and maximizes warm-engine efficiency.
Avoiding rush hour driving
in heavy traffic can save on fuel usage. Frequent braking, idling and acceleration all waste fuel. If possible, travel during off-peak times to help maintain a steady speed and get better MPG.
Carpooling or ridesharing
are other options to save on gas mileage. Sharing a ride to work, school or events cuts down on fuel costs, vehicle wear and emissions. Some states offer carpool lanes (HOV lanes) for cars with two or more people, which can reduce drive time and idling during heavy rush hour traffic.
2. Tire pressure and temperature effects
When it comes to saving fuel, many drivers overlook one of the simplest and most effective ways: proper tire pressure. Your car’s tires play a critical role in how efficiently your vehicle uses gas, and
even slight changes in tire pressure
can impact fuel economy, safety and tire lifespan.
In addition, as temperatures rise and fall throughout the year, a car’s tire pressure also fluctuates without you even noticing. Understanding how tire pressure and temperature work together can help drivers maintain better mileage throughout the year.
Use this calculator to see how temperature changes affect the overall tire PSI (pounds per square inch).
Tire Pressure & Temperature Calculator
Estimate how much your tire pressure may change with shifts in temperature.
Temperature Change
Select Unit
According to the
U.S. Department of Energy, properly inflated tires can improve your gas mileage by up to 3%
, while significantly underinflated tires can reduce it by the same amount or more.
Regularly checking and adjusting your PSI as temperatures fluctuate is one of the simplest ways to protect your fuel economy, extend tire life and stay safe on the road.
Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more!
Learn more
3. Fuel type and additives: What you use matters
Not all gasoline is the same, and gas stations that display the
Top Tier™ logo
at the pump use fuel that contains higher levels of detergent additives. These additives help keep your engine cleaner over time, resulting in better fuel efficiency, reduced emissions and fewer deposits on your car’s fuel injectors and intake valves. In fact,
AAA research
found that engines that run on non-Top Tier fuel can develop 19 times more carbon deposits.
Stick with the
octane recommended
for your vehicle. Unless your owner’s manual specifies premium fuel, using it won’t improve your gas mileage or performance. Most vehicles run optimally on
regular 87-octane gasoline
.
Reconsider aftermarket fuel additives for your car. Many of these additives claim to boost MPG or clean your engine, but results are mixed. Some may provide marginal benefits, but nothing replaces the consistent use of quality fuel and
proper vehicle maintenance
.
Pro-tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.
4. Accelerate gradually
One of the easiest ways to save on fuel is by accelerating smoothly and steadily. Sudden “jackrabbit” starts, where you stomp on the gas as soon as the light turns green, burn significantly more fuel than gentle acceleration. According to the
Department of Energy, aggressive driving habits like rapid acceleration lower gas mileage by 15% to 30% on highways and 10% to 40% in stop-and-go traffic
.
On the flip side, accelerating too slowly can also be inefficient. Your engine may struggle to reach its most fuel-efficient operating range, especially in newer vehicles with advanced transmission systems.
The key is a smooth and steady pace that allows your car or truck to shift gears and maintain momentum without wasting fuel.
Bonus tip: Drive like there’s an egg on the gas pedal—press evenly and gently on the accelerator to avoid breaking the egg.
5. Watch your speed
Driving at
lower speeds
isn’t just about safety; slower driving can save money at the pump. Most vehicles reach their optimal fuel efficiency at speeds between
40 and 50 mph
. Gas mileage usually decreases rapidly at speeds above 50 mph. Above 50 mph, aerodynamic drag increases significantly, forcing the engine to work harder and burn more fuel just to maintain the speed.
According to
FuelEconomy.gov
, reducing your highway speed by just
5 to 10 mph
can boost your fuel economy by
7% to 14%
. That means if you're typically cruising at 70 mph, dropping to 60 or 65 could help you go farther on every gallon, especially on long road trips.
Bonus tip: Use cruise control on flat highways to maintain a steady speed. This reduces unnecessary acceleration and braking, both of which hurt fuel efficiency.
Tests have shown that using cruise control when driving on level highway roads can save gas. Maintaining a constant speed requires less acceleration and braking. Just remember to avoid using cruise control on wet or slippery roads.
6. Lose unnecessary vehicle weight
Your vehicle works harder when it’s heavier, and that means it uses more fuel. According to the U.S. Department of Energy,
an extra 100 pounds in your vehicle can reduce your MPG by up to 1%
,
especially in smaller vehicles. That might not sound like much, but if you’re carrying around heavy gear, sports equipment or boxes “just in case,” it adds up over time.
Every pound of unnecessary stuff – roof racks, cargo boxes and bike carriers – compound the fuel reduction.
If you’re not using that bike or ski rack or that box of old books, leave them at home, lightening your load to increase gas mileage and improve acceleration and handling.
Bonus Tip: Clean out your trunk and back seat every month. Keeping your car light and drag-free is one of the easiest ways to improve MPG—no tools required.
đźš— Fuel-Saving Quiz: How Much Can You Save?
Select the items you'd be willing to remove or store, and see how much fuel you could potentially save.
Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more!
Learn more
7. Anticipate stops
Stay aware of traffic patterns and actively scan the road for potential changes to avoid sudden braking or acceleration. When you sense a stop ahead, begin slowing down early by easing off the accelerator, conserving fuel in the process.
Whenever possible, aim to time stoplights carefully to keep your momentum steady and minimize the stop-and-go cycle.
Additionally, consider using technology to your advantage—prepaid passes on toll roads can prevent slowdowns at toll booths, offering a dual benefit of saving time and improving fuel economy. Every second saved in avoiding unnecessary stops contributes to better overall efficiency.
Bonus tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.
8. Avoid excessive idling
Idling isn’t just a waste of time—it’s a significant drain on fuel, with larger engines or air conditioning compounding the issue. According to fueleconomy.gov, idling can burn through up to half a gallon of fuel per hour, making it a costly habit for both your wallet and the environment.
Instead, adopt efficient practices such as limiting morning vehicle warm-ups, which are often unnecessary for modern engines. If you’re parked or stuck in non-moving traffic for over a minute, turn off your engine when safe, as restarting typically consumes less fuel than prolonged idling. These small actions can save fuel and reduce emissions over time.
At AAA-owned Car Care and AAA Approved Auto Repair facilities, Members get a free vehicle maintenance inspection with any paid service and 10 percent off repair and labor (up to $75).
Find a nearby facility
9. Give your car some TLC
Fuel efficiency isn’t just about how you drive—it’s also about how well you care for your vehicle. Simple routine maintenance can go a long way toward helping your car get better gas mileage and last longer.
Check and maintain tire pressure
According to the U.S. Department of Energy, underinflated tires can reduce gas mileage by up to 3%. Tire pressure drops roughly 1 PSI for every 10°F decrease in temperature, so check your PSI monthly, especially during seasonal changes, and keep tires inflated to the manufacturer’s recommendation which you can find in the owner’s manual and the driver’s door jamb.
Keep your air filter clean
A clogged or dirty engine
air filter
can limit airflow, reducing fuel efficiency and engine performance. While newer cars automatically adjust air intake, older vehicles may lose MPG when the filter is dirty. Replacing it regularly helps your engine “breathe” better and operate more efficiently.
Don’t ignore warning lights
A faulty
oxygen sensor
or emissions component can seriously reduce your fuel economy, sometimes by as much as
20%
. If your
check engine light
or other
warning light
is on, don’t delay diagnostics and repairs. Catching issues early helps keep your car running efficiently and can prevent costly breakdowns.
Final Bonus Tip: Set a monthly “car care day” to check tires, top off fluids and clear out your trunk. A little love now can add up to big fuel savings later.
Fill'er up!
Find local gas prices
The AAA Mobile app helps you compare the price of gas at stations near you so you can find the closest and least expensive location to get your car fueled up.
Get AAA mobile
Frequently asked questions about gas mileage increases
Fuel efficiency drops sharply at higher speeds due to increased aerodynamic drag. Most vehicles reach peak fuel economy between
40 and 50 mph
. Once you go over
50 mph
, your engine works harder to overcome wind resistance. Driving at
70 mph
instead of
55 mph
can lower your fuel economy by
15% or more
, especially on highways. Slowing down not only saves gas, it reduces wear on your vehicle and improves safety, too.
Yes! Carpool lanes (also known as HOV lanes) are designed to move traffic more efficiently by reducing congestion. Sharing a ride with others means fewer vehicles on the road, which cuts down on both fuel consumption and emissions. Plus, using carpool lanes often means less time idling in traffic, which helps improve your MPG.Â
Start by driving more smoothly, avoiding rapid acceleration and hard braking. These habits alone can improve your MPG by up to 40% in city driving.
Only if your vehicle requires it. Most cars run efficiently on regular 87-octane gas. Using premium when it’s not recommended won’t improve performance or mileage.
Check it monthly, especially during seasonal temperature changes. Keeping tires properly inflated can improve fuel economy by up to 3%.
Top Tier™ fuel includes extra detergents that help keep engines clean and running efficiently. AAA research found that non–Top Tier fuels can cause 19x more carbon buildup.
Yes—especially at highway speeds. A roof box can reduce MPG by up to 25%. Removing unneeded items lightens your load and cuts aerodynamic drag.
Yes. Idling for just 10 minutes can burn about a tenth of a gallon. If you’re stopped for over a minute, it’s usually better to turn the engine off.
Yes! Use our MPG calculator to see how many miles you're getting per gallon and track your progress over time. (Scroll back up to use our calculator!) | |||||||||
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4. Driving Tips to Help You Increase Gas Mileage
auto
# Driving Tips to Help You Increase Gas Mileage
[Kevin Feather](https://www.acg.aaa.com/connect/blogs/authors)
March 06, 2026
6 Min Read
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**\-- Updated March 2026 --**
## Article overview
- **Smart driving habits:** Avoid rapid acceleration, hard braking, and excessive idling to improve fuel efficiency by up to 40% in stop-and-go traffic.
- **Vehicle maintenance:** Regularly check tire pressure, clean air filters, and address warning lights to optimize fuel economy and extend vehicle life.
- **Efficient planning:** Use route planning tools, carpooling, and combine errands to reduce unnecessary trips and fuel consumption.
- **Lighten the load:** Remove unnecessary weight and roof racks to reduce drag and improve mileage, especially at highway speeds.
With gas prices remaining unpredictable and road trips on the rise, improving your vehicle’s fuel efficiency has never been more important. Whether you're driving a compact car, SUV or hybrid, small changes in your driving habits and maintenance routine can lead to big savings at the pump.
## **How to increase gas mileage: Save fuel with these easy driving tips**
From planning your routes to avoiding rapid acceleration, these proven fuel-saving techniques will help you increase gas mileage, reduce emissions and keep more money in your wallet. In this updated guide, we’ll walk through the top ways to boost fuel economy—plus a few surprising facts you may not know.
Fuel is the second-largest ongoing cost of owning a vehicle, surpassed only by depreciation. But the good news? You can cut down on fuel expenses without upgrading your car. In fact, simple changes to your driving habits can lead to significant savings.
For example, avoiding aggressive acceleration and hard braking can improve your gas mileage by as much as **40% in stop-and-go traffic**, according to the [U.S. Department of Energy’s FuelEconomy.gov](https://www.energy.gov/energysaver/driving-more-efficiently). With national average gas prices hovering around **\$3.50 per gallon** in mid-2025, that kind of improvement adds up fast.
#### AAA Members can save money on every fill-up at Shell with the Shell® Fuel Rewards® program.
[Get discount info‍](http://www.aaa.com/shell)
â–¶
## **Calculate your miles per gallon (MPG)**
Are you wondering what your vehicle’s MPG is? Use our calculator to see how you’re doing and then check in from time to time to see if you’re making any progress on increasing your gas mileage.
## Find Your Vehicle’s Fuel Efficiency
Miles Driven:
Gallons Used:
Calculate MPG
## **Top tips to increase gas mileage**
Here are our top [eco-driving tips](https://www.acg.aaa.com/connect/blogs/4c/auto/what-is-eco-driving) to help you increase gas mileage, which, in return, will save you money at the pump.
***
## **1\. Route planning and carpooling**
Before you leave your garage or [parking spot](https://www.acg.aaa.com/connect/blogs/4c/discounts/five-tips-to-use-the-parking-spot), doing some **route planning** is a smart way to boost overall fuel efficiency. Using apps like Google Maps, Waze and [AAA TripTik®](https://triptik.aaa.com/home/index.html) can help you to avoid traffic congestion, road closures and construction zones that can waste fuel due to longer periods of idling and stop-and-go driving.
Another way to save on gas use is to **group errands** into one trip and plan out your stops in a loop rather than making multiple back-and-forth trips. This helps because starting your car when the engine is cold uses more fuel, so combining trips reduces the number of cold starts and maximizes warm-engine efficiency.
**Avoiding rush hour driving** in heavy traffic can save on fuel usage. Frequent braking, idling and acceleration all waste fuel. If possible, travel during off-peak times to help maintain a steady speed and get better MPG.
**Carpooling or ridesharing** are other options to save on gas mileage. Sharing a ride to work, school or events cuts down on fuel costs, vehicle wear and emissions. Some states offer carpool lanes (HOV lanes) for cars with two or more people, which can reduce drive time and idling during heavy rush hour traffic.
## **2\. Tire pressure and temperature effects**
When it comes to saving fuel, many drivers overlook one of the simplest and most effective ways: proper tire pressure. Your car’s tires play a critical role in how efficiently your vehicle uses gas, and [even slight changes in tire pressure](https://www.acg.aaa.com/connect/blogs/5c/auto/understanding-tire-pressure-and-temperature-change) can impact fuel economy, safety and tire lifespan.
In addition, as temperatures rise and fall throughout the year, a car’s tire pressure also fluctuates without you even noticing. Understanding how tire pressure and temperature work together can help drivers maintain better mileage throughout the year.
Use this calculator to see how temperature changes affect the overall tire PSI (pounds per square inch).
### Tire Pressure & Temperature Calculator
Estimate how much your tire pressure may change with shifts in temperature.
Temperature Change
Select Unit
Calculate
According to the [U.S. Department of Energy, properly inflated tires can improve your gas mileage by up to 3%](https://afdc.energy.gov/files/u/publication/10_G00888_savings_WEB.pdf), while significantly underinflated tires can reduce it by the same amount or more.
Regularly checking and adjusting your PSI as temperatures fluctuate is one of the simplest ways to protect your fuel economy, extend tire life and stay safe on the road.
#### Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more\!
[Learn more‍](https://www.acg.aaa.com/connect/blogs/4c/travel/holiday-travel-savings)
## **3\. Fuel type and additives: What you use matters**
Not all gasoline is the same, and gas stations that display the [Top Tier™ logo](https://www.toptiergas.com/) at the pump use fuel that contains higher levels of detergent additives. These additives help keep your engine cleaner over time, resulting in better fuel efficiency, reduced emissions and fewer deposits on your car’s fuel injectors and intake valves. In fact, [AAA research](https://www.aaa.com/autorepair/articles/not-all-gasoline-is-created-equal) found that engines that run on non-Top Tier fuel can develop 19 times more carbon deposits.
Stick with the **octane recommended** for your vehicle. Unless your owner’s manual specifies premium fuel, using it won’t improve your gas mileage or performance. Most vehicles run optimally on [regular 87-octane gasoline](https://www.acg.aaa.com/connect/blogs/4c/auto/premium-vs-regular-gas).
Reconsider aftermarket fuel additives for your car. Many of these additives claim to boost MPG or clean your engine, but results are mixed. Some may provide marginal benefits, but nothing replaces the consistent use of quality fuel and [proper vehicle maintenance](https://www.acg.aaa.com/connect/blogs/4c/auto/best-preventive-maintenance-for-your-car).
***
***Pro-tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.***
## **4\. Accelerate gradually**
One of the easiest ways to save on fuel is by accelerating smoothly and steadily. Sudden “jackrabbit” starts, where you stomp on the gas as soon as the light turns green, burn significantly more fuel than gentle acceleration. According to the [Department of Energy, aggressive driving habits like rapid acceleration lower gas mileage by 15% to 30% on highways and 10% to 40% in stop-and-go traffic](https://www.energy.gov/energysaver/driving-more-efficiently#:~:text=Aggressive%20driving%20\(speeding%2C%20rapid%20acceleration,speed%20limit%20is%20also%20safer.).
On the flip side, accelerating too slowly can also be inefficient. Your engine may struggle to reach its most fuel-efficient operating range, especially in newer vehicles with advanced transmission systems.
The key is a smooth and steady pace that allows your car or truck to shift gears and maintain momentum without wasting fuel.
***Bonus tip: Drive like there’s an egg on the gas pedal—press evenly and gently on the accelerator to avoid breaking the egg.***
## **5\. Watch your speed**
Driving at [lower speeds](https://www.acg.aaa.com/connect/blogs/4c/auto/5-good-reasons-to-slow-down) isn’t just about safety; slower driving can save money at the pump. Most vehicles reach their optimal fuel efficiency at speeds between **40 and 50 mph**. Gas mileage usually decreases rapidly at speeds above 50 mph. Above 50 mph, aerodynamic drag increases significantly, forcing the engine to work harder and burn more fuel just to maintain the speed.
According to [FuelEconomy.gov](https://www.energy.gov/energysaver/driving-more-efficiently), reducing your highway speed by just **5 to 10 mph** can boost your fuel economy by **7% to 14%**. That means if you're typically cruising at 70 mph, dropping to 60 or 65 could help you go farther on every gallon, especially on long road trips.
***Bonus tip: Use cruise control on flat highways to maintain a steady speed. This reduces unnecessary acceleration and braking, both of which hurt fuel efficiency.***
Tests have shown that using cruise control when driving on level highway roads can save gas. Maintaining a constant speed requires less acceleration and braking. Just remember to avoid using cruise control on wet or slippery roads.
## **6\. Lose unnecessary vehicle weight**
Your vehicle works harder when it’s heavier, and that means it uses more fuel. According to the U.S. Department of Energy, [**an extra 100 pounds in your vehicle can reduce your MPG by up to 1%**,](https://www.energy.gov/energysaver/driving-more-efficiently) especially in smaller vehicles. That might not sound like much, but if you’re carrying around heavy gear, sports equipment or boxes “just in case,” it adds up over time.
Every pound of unnecessary stuff – roof racks, cargo boxes and bike carriers – compound the fuel reduction.
If you’re not using that bike or ski rack or that box of old books, leave them at home, lightening your load to increase gas mileage and improve acceleration and handling.
***Bonus Tip: Clean out your trunk and back seat every month. Keeping your car light and drag-free is one of the easiest ways to improve MPG—no tools required.***
### đźš— Fuel-Saving Quiz: How Much Can You Save?
Select the items you'd be willing to remove or store, and see how much fuel you could potentially save.
Calculate My Fuel Savings
#### Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more\!
[Learn more‍](https://www.acg.aaa.com/connect/blogs/4c/travel/road-trip-money-tips)
## **7\. Anticipate stops**
Stay aware of traffic patterns and actively scan the road for potential changes to avoid sudden braking or acceleration. When you sense a stop ahead, begin slowing down early by easing off the accelerator, conserving fuel in the process.
Whenever possible, aim to time stoplights carefully to keep your momentum steady and minimize the stop-and-go cycle.
Additionally, consider using technology to your advantage—prepaid passes on toll roads can prevent slowdowns at toll booths, offering a dual benefit of saving time and improving fuel economy. Every second saved in avoiding unnecessary stops contributes to better overall efficiency.
***Bonus tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.***
## **8\. Avoid excessive idling**
Idling isn’t just a waste of time—it’s a significant drain on fuel, with larger engines or air conditioning compounding the issue. According to fueleconomy.gov, idling can burn through up to half a gallon of fuel per hour, making it a costly habit for both your wallet and the environment.
Instead, adopt efficient practices such as limiting morning vehicle warm-ups, which are often unnecessary for modern engines. If you’re parked or stuck in non-moving traffic for over a minute, turn off your engine when safe, as restarting typically consumes less fuel than prolonged idling. These small actions can save fuel and reduce emissions over time.
#### At AAA-owned Car Care and AAA Approved Auto Repair facilities, Members get a free vehicle maintenance inspection with any paid service and 10 percent off repair and labor (up to \$75).
[Find a nearby facility‍](http://aaa.com/aaacarcarlocations%20)
## **9\. Give your car some TLC**
Fuel efficiency isn’t just about how you drive—it’s also about how well you care for your vehicle. Simple routine maintenance can go a long way toward helping your car get better gas mileage and last longer.
- **Check and maintain tire pressure**
According to the U.S. Department of Energy, underinflated tires can reduce gas mileage by up to 3%. Tire pressure drops roughly 1 PSI for every 10°F decrease in temperature, so check your PSI monthly, especially during seasonal changes, and keep tires inflated to the manufacturer’s recommendation which you can find in the owner’s manual and the driver’s door jamb.
- **Keep your air filter clean**
A clogged or dirty engine [air filter](https://www.acg.aaa.com/connect/blogs/4c/auto/keeping-car-cabin-air-filter-clean) can limit airflow, reducing fuel efficiency and engine performance. While newer cars automatically adjust air intake, older vehicles may lose MPG when the filter is dirty. Replacing it regularly helps your engine “breathe” better and operate more efficiently.
- **Don’t ignore warning lights**
A faulty **oxygen sensor** or emissions component can seriously reduce your fuel economy, sometimes by as much as **20%**. If your [check engine light](https://www.acg.aaa.com/connect/blogs/4c/auto/my-check-engine-light-is-on-what-do-i-do) or other [warning light](https://www.acg.aaa.com/connect/blogs/4c/auto/car-warning-lights-meaning) is on, don’t delay diagnostics and repairs. Catching issues early helps keep your car running efficiently and can prevent costly breakdowns.
**Final Bonus Tip: Set a monthly “car care day” to check tires, top off fluids and clear out your trunk. A little love now can add up to big fuel savings later.**
Fill'er up\!
### Find local gas prices
The AAA Mobile app helps you compare the price of gas at stations near you so you can find the closest and least expensive location to get your car fueled up.
[Get AAA mobile‍](http://www.aaa.com/mobile)
## Frequently asked questions about gas mileage increases
### Why does driving at 55 mph save more gas than 70 mph?‍
Fuel efficiency drops sharply at higher speeds due to increased aerodynamic drag. Most vehicles reach peak fuel economy between **40 and 50 mph**. Once you go over **50 mph**, your engine works harder to overcome wind resistance. Driving at **70 mph** instead of **55 mph** can lower your fuel economy by **15% or more**, especially on highways. Slowing down not only saves gas, it reduces wear on your vehicle and improves safety, too.
### Is it true that carpool lanes save money and fuel?‍
Yes! Carpool lanes (also known as HOV lanes) are designed to move traffic more efficiently by reducing congestion. Sharing a ride with others means fewer vehicles on the road, which cuts down on both fuel consumption and emissions. Plus, using carpool lanes often means less time idling in traffic, which helps improve your MPG.
### What’s the easiest way to improve gas mileage?‍
Start by driving more smoothly, avoiding rapid acceleration and hard braking. These habits alone can improve your MPG by up to 40% in city driving.
### Does using premium fuel help with gas mileage?‍
Only if your vehicle requires it. Most cars run efficiently on regular 87-octane gas. Using premium when it’s not recommended won’t improve performance or mileage.
### How often should I check tire pressure to save fuel?‍
Check it monthly, especially during seasonal temperature changes. Keeping tires properly inflated can improve fuel economy by up to 3%.
### What’s Top Tier fuel and why does it matter?‍
Top Tier™ fuel includes extra detergents that help keep engines clean and running efficiently. AAA research found that non–Top Tier fuels can cause 19x more carbon buildup.
### Do roof racks or extra gear really affect MPG?‍
Yes—especially at highway speeds. A roof box can reduce MPG by up to 25%. Removing unneeded items lightens your load and cuts aerodynamic drag.
### Does idling waste a lot of fuel?‍
Yes. Idling for just 10 minutes can burn about a tenth of a gallon. If you’re stopped for over a minute, it’s usually better to turn the engine off.
### Is there a way to calculate how I’m doing on fuel economy?‍
Yes! Use our MPG calculator to see how many miles you're getting per gallon and track your progress over time. (Scroll back up to use our calculator!)
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## Other Articles You May Like
[ auto What Can Be Recycled in Regular Car Maintenance? Kyle Marra \| 5 min read](https://www.acg.aaa.com/connect/blogs/6c/auto/what-can-be-recycled-in-regular-car-maintenance)
[ auto Extended Warranties: What to Know Before You Buy Jen Miranda \| 5 min read](https://www.acg.aaa.com/connect/blogs/6c/auto/extended-warranties-what-to-know-before-you-buy)
[ auto Questions to Ask When Buying a Car: New and Used Car Buying Checklist Kevin Feather \| 8 min read](https://www.acg.aaa.com/connect/blogs/4c/auto/questions-to-ask-when-buying-a-car)
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4. Driving Tips to Help You Increase Gas Mileage
auto
March 06, 2026 6 Min Read
**\-- Updated March 2026 --**
## Article overview
- **Smart driving habits:** Avoid rapid acceleration, hard braking, and excessive idling to improve fuel efficiency by up to 40% in stop-and-go traffic.
- **Vehicle maintenance:** Regularly check tire pressure, clean air filters, and address warning lights to optimize fuel economy and extend vehicle life.
- **Efficient planning:** Use route planning tools, carpooling, and combine errands to reduce unnecessary trips and fuel consumption.
- **Lighten the load:** Remove unnecessary weight and roof racks to reduce drag and improve mileage, especially at highway speeds.
With gas prices remaining unpredictable and road trips on the rise, improving your vehicle’s fuel efficiency has never been more important. Whether you're driving a compact car, SUV or hybrid, small changes in your driving habits and maintenance routine can lead to big savings at the pump.
## **How to increase gas mileage: Save fuel with these easy driving tips**
From planning your routes to avoiding rapid acceleration, these proven fuel-saving techniques will help you increase gas mileage, reduce emissions and keep more money in your wallet. In this updated guide, we’ll walk through the top ways to boost fuel economy—plus a few surprising facts you may not know.
Fuel is the second-largest ongoing cost of owning a vehicle, surpassed only by depreciation. But the good news? You can cut down on fuel expenses without upgrading your car. In fact, simple changes to your driving habits can lead to significant savings.
For example, avoiding aggressive acceleration and hard braking can improve your gas mileage by as much as **40% in stop-and-go traffic**, according to the [U.S. Department of Energy’s FuelEconomy.gov](https://www.energy.gov/energysaver/driving-more-efficiently). With national average gas prices hovering around **\$3.50 per gallon** in mid-2025, that kind of improvement adds up fast.
#### AAA Members can save money on every fill-up at Shell with the Shell® Fuel Rewards® program.
[Get discount info](http://www.aaa.com/shell)
## **Calculate your miles per gallon (MPG)**
Are you wondering what your vehicle’s MPG is? Use our calculator to see how you’re doing and then check in from time to time to see if you’re making any progress on increasing your gas mileage.
## Find Your Vehicle’s Fuel Efficiency
Miles Driven:
Gallons Used:
## **Top tips to increase gas mileage**
Here are our top [eco-driving tips](https://www.acg.aaa.com/connect/blogs/4c/auto/what-is-eco-driving) to help you increase gas mileage, which, in return, will save you money at the pump.
## **1\. Route planning and carpooling**
Before you leave your garage or [parking spot](https://www.acg.aaa.com/connect/blogs/4c/discounts/five-tips-to-use-the-parking-spot), doing some **route planning** is a smart way to boost overall fuel efficiency. Using apps like Google Maps, Waze and [AAA TripTik®](https://triptik.aaa.com/home/index.html) can help you to avoid traffic congestion, road closures and construction zones that can waste fuel due to longer periods of idling and stop-and-go driving.
Another way to save on gas use is to **group errands** into one trip and plan out your stops in a loop rather than making multiple back-and-forth trips. This helps because starting your car when the engine is cold uses more fuel, so combining trips reduces the number of cold starts and maximizes warm-engine efficiency.
**Avoiding rush hour driving** in heavy traffic can save on fuel usage. Frequent braking, idling and acceleration all waste fuel. If possible, travel during off-peak times to help maintain a steady speed and get better MPG.
**Carpooling or ridesharing** are other options to save on gas mileage. Sharing a ride to work, school or events cuts down on fuel costs, vehicle wear and emissions. Some states offer carpool lanes (HOV lanes) for cars with two or more people, which can reduce drive time and idling during heavy rush hour traffic.
## **2\. Tire pressure and temperature effects**
When it comes to saving fuel, many drivers overlook one of the simplest and most effective ways: proper tire pressure. Your car’s tires play a critical role in how efficiently your vehicle uses gas, and [even slight changes in tire pressure](https://www.acg.aaa.com/connect/blogs/5c/auto/understanding-tire-pressure-and-temperature-change) can impact fuel economy, safety and tire lifespan.
In addition, as temperatures rise and fall throughout the year, a car’s tire pressure also fluctuates without you even noticing. Understanding how tire pressure and temperature work together can help drivers maintain better mileage throughout the year.
Use this calculator to see how temperature changes affect the overall tire PSI (pounds per square inch).
### Tire Pressure & Temperature Calculator
Estimate how much your tire pressure may change with shifts in temperature.
Temperature Change Select Unit
According to the [U.S. Department of Energy, properly inflated tires can improve your gas mileage by up to 3%](https://afdc.energy.gov/files/u/publication/10_G00888_savings_WEB.pdf), while significantly underinflated tires can reduce it by the same amount or more.
Regularly checking and adjusting your PSI as temperatures fluctuate is one of the simplest ways to protect your fuel economy, extend tire life and stay safe on the road.
#### Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more\!
[Learn more](https://www.acg.aaa.com/connect/blogs/4c/travel/holiday-travel-savings)
## **3\. Fuel type and additives: What you use matters**
Not all gasoline is the same, and gas stations that display the [Top Tier™ logo](https://www.toptiergas.com/) at the pump use fuel that contains higher levels of detergent additives. These additives help keep your engine cleaner over time, resulting in better fuel efficiency, reduced emissions and fewer deposits on your car’s fuel injectors and intake valves. In fact, [AAA research](https://www.aaa.com/autorepair/articles/not-all-gasoline-is-created-equal) found that engines that run on non-Top Tier fuel can develop 19 times more carbon deposits.
Stick with the **octane recommended** for your vehicle. Unless your owner’s manual specifies premium fuel, using it won’t improve your gas mileage or performance. Most vehicles run optimally on [regular 87-octane gasoline](https://www.acg.aaa.com/connect/blogs/4c/auto/premium-vs-regular-gas).
Reconsider aftermarket fuel additives for your car. Many of these additives claim to boost MPG or clean your engine, but results are mixed. Some may provide marginal benefits, but nothing replaces the consistent use of quality fuel and [proper vehicle maintenance](https://www.acg.aaa.com/connect/blogs/4c/auto/best-preventive-maintenance-for-your-car).
***Pro-tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.***
## **4\. Accelerate gradually**
One of the easiest ways to save on fuel is by accelerating smoothly and steadily. Sudden “jackrabbit” starts, where you stomp on the gas as soon as the light turns green, burn significantly more fuel than gentle acceleration. According to the [Department of Energy, aggressive driving habits like rapid acceleration lower gas mileage by 15% to 30% on highways and 10% to 40% in stop-and-go traffic](https://www.energy.gov/energysaver/driving-more-efficiently#:~:text=Aggressive%20driving%20\(speeding%2C%20rapid%20acceleration,speed%20limit%20is%20also%20safer.).
On the flip side, accelerating too slowly can also be inefficient. Your engine may struggle to reach its most fuel-efficient operating range, especially in newer vehicles with advanced transmission systems.
The key is a smooth and steady pace that allows your car or truck to shift gears and maintain momentum without wasting fuel.
***Bonus tip: Drive like there’s an egg on the gas pedal—press evenly and gently on the accelerator to avoid breaking the egg.***
## **5\. Watch your speed**
Driving at [lower speeds](https://www.acg.aaa.com/connect/blogs/4c/auto/5-good-reasons-to-slow-down) isn’t just about safety; slower driving can save money at the pump. Most vehicles reach their optimal fuel efficiency at speeds between **40 and 50 mph**. Gas mileage usually decreases rapidly at speeds above 50 mph. Above 50 mph, aerodynamic drag increases significantly, forcing the engine to work harder and burn more fuel just to maintain the speed.
According to [FuelEconomy.gov](https://www.energy.gov/energysaver/driving-more-efficiently), reducing your highway speed by just **5 to 10 mph** can boost your fuel economy by **7% to 14%**. That means if you're typically cruising at 70 mph, dropping to 60 or 65 could help you go farther on every gallon, especially on long road trips.
***Bonus tip: Use cruise control on flat highways to maintain a steady speed. This reduces unnecessary acceleration and braking, both of which hurt fuel efficiency.***
Tests have shown that using cruise control when driving on level highway roads can save gas. Maintaining a constant speed requires less acceleration and braking. Just remember to avoid using cruise control on wet or slippery roads.
## **6\. Lose unnecessary vehicle weight**
Your vehicle works harder when it’s heavier, and that means it uses more fuel. According to the U.S. Department of Energy, [**an extra 100 pounds in your vehicle can reduce your MPG by up to 1%**,](https://www.energy.gov/energysaver/driving-more-efficiently) especially in smaller vehicles. That might not sound like much, but if you’re carrying around heavy gear, sports equipment or boxes “just in case,” it adds up over time.
Every pound of unnecessary stuff – roof racks, cargo boxes and bike carriers – compound the fuel reduction.
If you’re not using that bike or ski rack or that box of old books, leave them at home, lightening your load to increase gas mileage and improve acceleration and handling.
***Bonus Tip: Clean out your trunk and back seat every month. Keeping your car light and drag-free is one of the easiest ways to improve MPG—no tools required.***
### đźš— Fuel-Saving Quiz: How Much Can You Save?
Select the items you'd be willing to remove or store, and see how much fuel you could potentially save.
#### Find other ways to save money on road trips or long vacations. Read about how your AAA Membership can save on hotels, car rentals, gas and more\!
[Learn more](https://www.acg.aaa.com/connect/blogs/4c/travel/road-trip-money-tips)
## **7\. Anticipate stops**
Stay aware of traffic patterns and actively scan the road for potential changes to avoid sudden braking or acceleration. When you sense a stop ahead, begin slowing down early by easing off the accelerator, conserving fuel in the process.
Whenever possible, aim to time stoplights carefully to keep your momentum steady and minimize the stop-and-go cycle.
Additionally, consider using technology to your advantage—prepaid passes on toll roads can prevent slowdowns at toll booths, offering a dual benefit of saving time and improving fuel economy. Every second saved in avoiding unnecessary stops contributes to better overall efficiency.
***Bonus tip: Using a prepaid pass on toll roads can help avoid stops and increase gas mileage, too.***
## **8\. Avoid excessive idling**
Idling isn’t just a waste of time—it’s a significant drain on fuel, with larger engines or air conditioning compounding the issue. According to fueleconomy.gov, idling can burn through up to half a gallon of fuel per hour, making it a costly habit for both your wallet and the environment.
Instead, adopt efficient practices such as limiting morning vehicle warm-ups, which are often unnecessary for modern engines. If you’re parked or stuck in non-moving traffic for over a minute, turn off your engine when safe, as restarting typically consumes less fuel than prolonged idling. These small actions can save fuel and reduce emissions over time.
#### At AAA-owned Car Care and AAA Approved Auto Repair facilities, Members get a free vehicle maintenance inspection with any paid service and 10 percent off repair and labor (up to \$75).
[Find a nearby facility](http://aaa.com/aaacarcarlocations%20)
## **9\. Give your car some TLC**
Fuel efficiency isn’t just about how you drive—it’s also about how well you care for your vehicle. Simple routine maintenance can go a long way toward helping your car get better gas mileage and last longer.
- **Check and maintain tire pressure**
According to the U.S. Department of Energy, underinflated tires can reduce gas mileage by up to 3%. Tire pressure drops roughly 1 PSI for every 10°F decrease in temperature, so check your PSI monthly, especially during seasonal changes, and keep tires inflated to the manufacturer’s recommendation which you can find in the owner’s manual and the driver’s door jamb.
- **Keep your air filter clean**
A clogged or dirty engine [air filter](https://www.acg.aaa.com/connect/blogs/4c/auto/keeping-car-cabin-air-filter-clean) can limit airflow, reducing fuel efficiency and engine performance. While newer cars automatically adjust air intake, older vehicles may lose MPG when the filter is dirty. Replacing it regularly helps your engine “breathe” better and operate more efficiently.
- **Don’t ignore warning lights**
A faulty **oxygen sensor** or emissions component can seriously reduce your fuel economy, sometimes by as much as **20%**. If your [check engine light](https://www.acg.aaa.com/connect/blogs/4c/auto/my-check-engine-light-is-on-what-do-i-do) or other [warning light](https://www.acg.aaa.com/connect/blogs/4c/auto/car-warning-lights-meaning) is on, don’t delay diagnostics and repairs. Catching issues early helps keep your car running efficiently and can prevent costly breakdowns.
**Final Bonus Tip: Set a monthly “car care day” to check tires, top off fluids and clear out your trunk. A little love now can add up to big fuel savings later.**
Fill'er up\!
### Find local gas prices
The AAA Mobile app helps you compare the price of gas at stations near you so you can find the closest and least expensive location to get your car fueled up.
[Get AAA mobile](http://www.aaa.com/mobile)
## Frequently asked questions about gas mileage increases
Fuel efficiency drops sharply at higher speeds due to increased aerodynamic drag. Most vehicles reach peak fuel economy between **40 and 50 mph**. Once you go over **50 mph**, your engine works harder to overcome wind resistance. Driving at **70 mph** instead of **55 mph** can lower your fuel economy by **15% or more**, especially on highways. Slowing down not only saves gas, it reduces wear on your vehicle and improves safety, too.
Yes! Carpool lanes (also known as HOV lanes) are designed to move traffic more efficiently by reducing congestion. Sharing a ride with others means fewer vehicles on the road, which cuts down on both fuel consumption and emissions. Plus, using carpool lanes often means less time idling in traffic, which helps improve your MPG.
Start by driving more smoothly, avoiding rapid acceleration and hard braking. These habits alone can improve your MPG by up to 40% in city driving.
Only if your vehicle requires it. Most cars run efficiently on regular 87-octane gas. Using premium when it’s not recommended won’t improve performance or mileage.
Check it monthly, especially during seasonal temperature changes. Keeping tires properly inflated can improve fuel economy by up to 3%.
Top Tier™ fuel includes extra detergents that help keep engines clean and running efficiently. AAA research found that non–Top Tier fuels can cause 19x more carbon buildup.
Yes—especially at highway speeds. A roof box can reduce MPG by up to 25%. Removing unneeded items lightens your load and cuts aerodynamic drag.
Yes. Idling for just 10 minutes can burn about a tenth of a gallon. If you’re stopped for over a minute, it’s usually better to turn the engine off.
Yes! Use our MPG calculator to see how many miles you're getting per gallon and track your progress over time. (Scroll back up to use our calculator!) | |||||||||
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