Why How You Drive Matters More Than You Think
Your wallet gets thinner every time you roll up to the gas pump. Fuel costs are going up and there’s little you can do about it. But the reality is this: how you drive has a huge effect on how much fuel you use.
Drivers unknowingly throw away hundreds of dollars each year. They accelerate and brake hard, then idle their engines. These routines consume fuel like a bonfire eats wood. The good news? You can shift these behaviors by starting today.
This piece spills the beans on nine effective fuel saving driving habits. They aren’t sophisticated tricks or costly modifications. Simple changes anyone can start right now. Build these habits, and you’ll see your fuel bills fall month after month.
They Can Be Expensive: The True Cost of Bad Driving Habits
Before we get into the fixes, here’s a sense of what your bad driving habits really are costing you. The numbers might surprise you.
| Driving Habit | Extra Fuel Used | Cost Per Year* |
|---|---|---|
| Aggressive acceleration | 15-30% | $300-$600 |
| Excessive idling | 10-15% | $200-$300 |
| Speeding (10 mph over) | 7-14% | $140-$280 |
| Poor tire pressure | 3-5% | $60-$100 |
*Assuming normal driving of 12,000 miles per year & $3.50 per gallon
These costs add up fast. A driver who exhibits myriad unpleasant behaviors could squander more than $1,000 a year. That’s money you could be putting toward vacations, savings or getting out of debt.
Habit #1: Put Your Foot Down Like You’ve an Egg to Accelerate
Picture a raw egg between your foot and the gas pedal. If you push too much, the egg cracks. Forming this mental picture helps you build the number one gas-saving habit: smooth acceleration.
When you slam on the gas pedal, your engine sucks in fuel to turn into that sudden burst of power. Your car uses more fuel to accelerate from 0 to 30 mph in five seconds than if it takes ten seconds to reach the same speed.
How to do it right:
Ease on the gas in a continuous lean. Your car should accelerate slowly, not jerk you forward. Count to five in your head as you accelerate from a stop sign. This will feel slow at first, but you’ll adjust pretty fast.
Look at your RPM gauge if you have one. Make sure you’re driving around in 2,500 RPM or less during usual driving. Higher RPMs translate to your engine working harder and consuming more fuel.
Acceleration is like the feeling of pouring water out of a jug. A steady, controlled pour is efficient. Splashes and waste result when you tip the jug too briskly.
Habit #2: Coast to Stops Instead of Slamming Brakes
Each time you brake hard, you’re wasting energy. Your car burned fuel getting there, and now you are turning the speed back into heat in your brake pads. That’s wasted fuel.
The best drivers are the most aware ones. When you approach a red light up in the distance, back out of the gas early. Then gradually decelerate naturally so you’ll coast toward that light. You may be amazed how far your car can travel while coasting.
Real-world example:
You’re traveling at 45 mph and notice a red light 500 feet in front of you. Most drivers do not lift their foot off the gas until they are 100 feet away and then brake hard. A fuel-efficient driver lifts off the gas at 500 feet and coasts in.
The coasting requires no fuel while slowing down. The hard-braking method will burn fuel right up until you slam the brakes. That difference can add up to some pretty significant savings over the course of a year.
This routine can also extend the life of your brakes, putting money back in your pocket for other repairs. And your passengers will thank you for the smoother ride.
Habit #3: Drive at Uniform Speeds on Highways
Your car will run at its best when it maintains a constant speed. Your engine is constantly adjusting as you speed up and slow down, consuming more fuel in the process.
Cruise control becomes your best friend on highways. It will hold a perfect speed without the little accelerations and decelerations your foot makes naturally. Research indicates it can improve fuel economy on the highway by up to 7-14%.
When to use cruise control:
- Long stretches of the highway with low traffic
- Flat or gently rolling terrain
- Clear visibility with dry pavement
When to avoid cruise control:
- Stop-and-go traffic
- Steep hills (it might go too fast downhill)
- Wet, icy, or snowy roads when you want maximum control
You don’t even have to have cruise control to practice maintaining steady speeds. Pick a speed and stick to it. Fight the temptation to pass every car or speed up to make it to the next red light. Consistency saves fuel.
Habit #4: Maintain Proper Tire Air Pressure
As your tires roll against the road they generate resistance. This resistance is known as rolling resistance and it adds extra load on your engine. With under-inflated tires, the resistance increases and your engine can consume extra fuel.
Consider what it would be like to ride a bike with flat tires, then one with properly inflated ones. These flat tires are sluggish and hard to pedal. The logic is the same for your car, but you can’t really feel the difference.
How Tire Pressure Affects Your Gas Mileage
| Pressure Level | Impact on Fuel Economy | Estimated Annual Cost* |
|---|---|---|
| Inflated correctly | Baseline | $0 |
| 5 PSI Below | 1-2% loss | $20-$40 |
| 10 PSI Below | 3-5% loss | $60-$100 |
| 15 PSI Below | 5-7% loss | $100-$140 |
*Assumes 12,000 miles driven per year and $3.50 a gallon
How to keep your tire pressure right:
Use a tire pressure gauge to check your tire pressure once a month. You can buy one at any auto parts store for less than $10. Do this when the tires are cold, before you’ve driven a mile.
Locate the driver’s door or your car’s owner’s manual and find the recommended tire pressure for your vehicle on a sticker inside the driver’s door. Don’t use the number stamped on the tire itself; that’s the maximum pressure, not the pressure you should be using.
Fill the tires at a gas station, or use a portable air compressor at home. This easy tip takes 5 minutes each month and could save you $100 per year.
Habit #5: Reducing Your Idle Time
Here’s something most drivers don’t realize: A car that idles gets exactly 0 miles per gallon, and it can burn a quarter to a half gallon of fuel per hour. That may not seem like a lot, but it adds up fast.
Idling your car for 10 minutes on chilly mornings? That’s wasted fuel. Idling doesn’t have to take more than 30 seconds in a modern vehicle for the engine to be warm enough that driving away won’t harm it. In fact, they warm up a lot faster if you drive them reasonably gently than they do when idling.
Common idling situations to avoid:
Sitting in your car while someone else you’re with is in a store. Switch off the engine if you will be waiting for longer than 60 seconds. It does not take more gas to restart your car than it takes to idle for a minute or more.
Sitting in drive-through lanes that are not moving. If you can spot five cars ahead of you and they’re not moving, park and go in. You will save fuel, and you may even save time.
Warming your car while you scrape ice from the windshield. Scrape first, then turn the key. Your car doesn’t have to be running as you clean the windows.
Frequent restarts wear out their starter motor or battery, some people fear. Newer starters are designed to endure a lot more starts than the older ones. The money you save on fuel far exceeds any potential maintenance costs.
Habit #6: Shed 5-10 MPH Driving on the Highway
Speed kills fuel economy. Your car is out in the wind, and the faster you go, the more wind hits your car. This resistance rises exponentially—driving 75 mph creates much more than 10% more resistance than driving 65 mph.
Most vehicles get their best fuel economy somewhere between 45 and 60 miles per hour. The fuel economy drops off fairly steeply over 60 mph. You pay 15-20% more for fuel when you’re moving at 80 mph instead of 70 mph.
Fuel Economy at Different Highway Speeds
| Speed | Relative Fuel Economy | Estimated MPG (Midsize Sedan) |
|---|---|---|
| 55 mph | 100% (baseline) | 35 MPG |
| 65 mph | 90-95% | 31-33 MPG |
| 75 mph | 80-85% | 28-30 MPG |
| 85 mph | 70-75% | 24-26 MPG |
Slowing down makes you safer, too. Slower speeds afford you more time to react and lessen the impact of any accidents that do occur. You’ll get there a few minutes late, but you’ll save money and reduce aggravation.
The math of time versus money:
An 80-minute highway drive, 100 miles at 75 mph. At 65 mph, the trip takes 92 minutes. You’re saving 12 minutes, but you may spend an additional $3–$5 on the fuel. That’s earning the equivalent of $15-$25 an hour in order to get 12 additional minutes. Is it worth it?
Habit #7: Trim Your Vehicle of Excess Weight
Your car burns fuel to move weight—both its own, and any amount of it that you haul. For every additional 100 pounds in your car, you lose between 1% and 2% fuel economy, depending on how large your vehicle is.
Look in your trunk right now. Do you really need that box of books you meant to donate three months ago? What about the bag full of sports equipment, the old tools, or the case of bottled water?
Typical items that add unnecessary weight:
- Golf clubs used once a month
- Camping supplies from last summer’s trip
- Tools and extra parts “just in case”
- Old textbooks or work materials
- Additional cargo organizers and storage bins
Keep emergency items such as a spare tire, jack and first aid kit. Take everything else out unless you’re going to use it this week.
Roof racks and cargo carriers are even more troublesome. They weigh down and produce drag. A bare roof rack can decrease fuel economy by 5-10% at highway speeds. Efficiency can drop by 25 percent or more with a fully loaded roof carrier.
Take off the roof racks if you’re not using them. Most models attach and detach in a matter of minutes. If you have something unwieldy to transport, use a roof rack for that journey and remove it afterward.
Habit #8: Combine Trips and Plan Your Routes
An engine that is cold requires more fuel than one that’s warmed up. In the first mile or two, your engine is working less efficiently than when it reaches operating temperature. Each new trip from a cold start burns fuel during this warm-up.
Your engine becomes more efficient by combining multiple errands into one trip. Three separate trips to the grocery store, bank and post office could result in 15 miles of driving with three cold starts. One combined trip covers 12 miles with one cold start and saves quite a bit of fuel.
Smart trip planning strategies:
Organize your route to avoid unnecessary backtracking. Plan all of your stops in advance. Visit locations in a logical order based on their positions, not based on priority.
Run errands on your way home from work. Your engine is already hot, so you will burn less fuel than going out for a separate trip later.
Employ traffic-calculating GPS apps. Sitting in traffic is fuel that does nothing but get wasted. A longer route with traffic that is moving uses less gas than a short one choked with congestion.
You may want to walk or bike if you’re going just a few blocks. Fuel is wasted and your engine doesn’t have time to warm up when you drive less than a mile. If the weather is good and you’re able, walking short distances will save fuel and give you exercise. For more strategies on maximizing your fuel efficiency, explore additional expert tips and resources.
Habit #9: Use Air Conditioning Wisely
Air conditioning has your engine working hard, and it burns extra gas to run the compressor. At highway speeds, using the AC decreases fuel efficiency by approximately 5%-10%. At lower speeds it’s even more dramatic.
But there’s a hitch: When you roll down your windows at highway speeds, it creates wind resistance that might hurt fuel economy more than AC would. So what should you do?
How to approach in different scenarios:
At low speeds (below 40 mph): Open windows rather than turning on the AC. There is minimal wind resistance and you’ll save fuel.
At highway speeds (more than 50 mph): Use AC with windows up. Open windows create wind resistance and that uses more gas than running the AC.
In cool weather: Try the vent system without AC. New cars have fantastic ventilation and there are lots of days that you will be comfortable without AC.
When you do run the AC, turn it up to its highest comfortable setting. Each degree cooler makes the system labor harder and burn more fuel. Raising your AC from 68 to 72 degrees can significantly affect fuel economy.
And park in the shade when you can. A cooler car requires less AC to remain comfortable. If you’re parked in the sun for most of the day, then use a windshield sunshade.
Really, How Much Money Can You Save?
Now let’s tally up the potential savings from all nine habits. These estimates are based on driving the average car 12,000 miles a year with gas at $3.50 per gallon.
Annual Fuel Savings Breakdown
| Driving Habit | Potential Savings Per Year |
|---|---|
| Smooth acceleration | $200-$400 |
| Coasting to stops | $100-$200 |
| Steady highway speeds | $150-$300 |
| Proper tire pressure | $60-$100 |
| Reduced idling | $100-$200 |
| Lower highway speed | $100-$200 |
| Removing excess weight | $50-$100 |
| Combining trips | $75-$150 |
| Smart AC use | $50-$100 |
| Total Potential Savings | $885-$1,750 |
These savings are based on you doing all nine habits consistently. If you just make half of these areas better, you can easily save between $400 and $900 per year. That’s real money left in your pocket.
Making These Habits Stick
Knowing practices like these is useful, but there’s a gap between knowing and actually doing them consistently. Here is how to make these ideas into automatic actions.
Start with one or two habits. Resist the urge to overhaul everything at once. Choose the habits that feel easiest or will save you the most cash. Work on them for a couple of weeks until they become second nature, and then add others.
Track your fuel economy. Fill your tank with gas and zero out your trip odometer. At your next fill-up, divide the miles driven by gallons used. Watch that number rise as you adopt better habits. Most modern cars show real-time fuel economy on the dashboard—use that feedback to learn which techniques are actually effective.
Make it a game. Make it a battle to improve on your best fuel record from last time. This makes fuel saving interesting, instead of a burden.
Calculate your savings. Multiply the gallons that you saved each month by your local cost per gallon of gas. There’s something about seeing real dollar amounts that makes you want to keep at it. Some save this found money for a special fund and spend it on things like vacations or big purchases.
Frequently Asked Questions
How long does it take to see savings from better driving habits?
You’ll see better gas mileage right away, and in many cases, you’ll see gains in fuel savings within the first tank of gasoline. The majority of drivers report a 10-15% increase in efficiency within the first month after establishing these habits.
Do these habits work for all types of vehicles?
Yes, these same principles apply whether you’re talking cars, trucks, SUVs, or vans. Larger vehicles could save even more because they use more fuel in the first place. Electric and hybrid cars can benefit from most of these habits as well, specifically smooth acceleration and shedding unnecessary weight.
Will I be a road hazard if I drive more slowly?
No. These habits suggest that you ought to be driving smoothly at reasonable speeds—not unreasonably slowly. You should be matching the flow of traffic safely. Actually, smooth acceleration and maintaining a steady speed mean you’re more predictable as a driver, which means safer.
Does brand of gasoline matter for fuel efficiency?
Good quality gasoline can maintain engine cleanliness, but the variation in fuel economy between brands is small. Instead, focus on these driving habits and not premium gasoline unless your car’s manual tells you that it’s necessary.
Is it safe to use cruise control in the city?
Cruise control is most effective on a highway with consistent, light traffic. In city driving where you have a lot of stops and speed changes, you’re going to be more effective with these manual techniques. With your foot, you’ll have finer control in variable conditions.
What are the impacts of weather on these fuel-saving techniques?
The cold is a drain on fuel economy because engines take longer to warm up and gasoline doesn’t burn as efficiently. These habits become even more vital when winter sets in. Heat makes us use more AC but otherwise does not impact most techniques.
Your Path to Lower Fuel Bills Begins Here
Fuel-saving driving habits aren’t complicated. They don’t need expensive equipment or wholesale lifestyle changes. You simply need to be aware of how you’re driving and make subtle corrections.
Each light touch of the gas pedal saves a few pennies. Every coasting stop prevents waste. Each correctly inflated tire reduces resistance. These little savings add up over thousands of miles and hundreds of trips a year.
Start today with one habit. Practice gentle acceleration on your evening commute. Check your tire pressure this weekend. Shut off your engine instead of idling in line. Every small step brings you closer to significant annual savings.
The best part? These habits are not just a cost-saving measure. They make you a safer driver, lower stress and contribute to the environment. You will enjoy an extended life span from your car with less aggressive driving. Your brakes will need replacement less often.
Your fuel bills don’t have to keep climbing. Take control with these nine essential habits. Your wallet will thank you every time you pass a gas station—and even more so when you don’t have to stop as frequently. According to the U.S. Department of Energy, aggressive driving can lower your gas mileage by roughly 15-30% at highway speeds.
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