Ways to spend less on gas with an older, less efficient car
Gas is one of the hardest costs to put off. You can fall behind on some bills and catch up later, but if the tank is empty, you cannot get to work, take your kids to school, or make it to an appointment.
It can be even harder when your car is older or has a lot of miles on it. Used and older vehicles usually burn more gas than newer ones, so the same trips cost you more.
This page explains how to lower what you spend on gasoline, with a focus on older cars. It is honest about which steps actually save money and which ones barely help, and it points you to places that may assist with paying for fuel if you cannot cover it right now.
An older car usually has more room to save
Most gas-saving advice assumes a newer car that has been well taken care of. A lot of people are not driving one of those, and that is fine. The good part is that an older car usually has more room to save. A newer car is already running close to its best, so there is little to gain. An older car that has missed some upkeep may be using more gas than it needs to, and getting the right things fixed can bring your cost down.
The trick is knowing which problems matter and which ones do not, so you spend your limited repair money where it actually helps.
The upkeep that actually affects how much gas you use
If your check engine light is on, do not ignore it. That light often means something is wrong with the engine, and some of those problems make your car burn more gas than it should. Many auto parts stores will read the code for free and tell you what is wrong, which lets you decide what is worth fixing. The U.S. Department of Energy's https://www.fueleconomy.gov/feg/maintain.jsp official fuel economy site explains how engine upkeep affects your gas mileage.
Keeping the engine properly tuned helps. Worn spark plugs and an engine that is overdue for basic service waste fuel on every trip. Using the grade of motor oil your car's manufacturer recommends also makes a small difference, so check your owner's manual for the right grade.
Proper tire pressure matters, but mostly for safety. Underinflated tires do lower your gas mileage a little, but the bigger reason to keep them filled is that they are safer and last longer. Replacing worn-out tires costs far more than the small amount of gas you would save, so check your pressure to protect yourself and avoid that larger expense. The correct pressure is on a sticker inside the driver's door or in your owner's manual, not the number printed on the side of the tire.
One common piece of advice is worth correcting. People often say that putting in a new air filter improves your gas mileage. For almost every car on the road today, that is not true. On cars built since the early 1980s, a clean air filter can help the engine run and improve acceleration, but it does not actually lower the amount of gas you use. Only on much older cars with a carburetor does a new filter improve gas mileage. A clean filter is still good for your engine and worth replacing, so just do not expect it to save you money at the pump.
How you drive saves more than anything else, and it costs nothing
This is where the biggest savings are. The main thing you control is how hard you speed up and slow down. Racing away from green lights and braking hard at red lights uses a lot more gas than easing into your acceleration and coasting up to stops. In stop-and-go city driving, a lighter foot on the pedal makes a noticeable difference. The Department of Energy's https://www.fueleconomy.gov/feg/driveHabits.jsp driving tips page goes into the details.
On the highway, slowing down helps. Gas mileage drops quickly once you get above about 50 miles per hour, so driving a little slower means you use less gas over the same distance.
Long idling wastes fuel while you go nowhere. If you are going to sit parked for more than a minute and it is safe to do so, turning the engine off saves gas. You also do not need to let the engine warm up for several minutes on cold mornings. Modern engines warm up quickly once you start driving.
Running your errands together helps more than you might think. Several short trips from a cold start can use about twice as much gas as one trip that covers the same distance with a warm engine. Planning your stops into one loop, instead of several separate trips, adds up over a month, and it saves more when your car uses a lot of gas to begin with.
Pay less for the gas you are already buying
You can also lower what you pay for each gallon. Free apps on your phone can show you the cheapest gas near you, which matters because prices can be very different between stations only a few blocks apart. Other apps give you a small amount of cash back on gas you were going to buy anyway. The guide to gas-saving apps on this site explains how they work and which ones are worth using.
Many gas stations and grocery store chains also run fuel rewards programs that take money off per gallon based on what you already buy. The gas station and grocery fuel rewards guide on this site covers those. Using a cash-back app, a store rewards program, and the cheapest nearby station together gets you the most off each fill-up.
One word of caution. Be careful with any product that claims a special device or additive will greatly improve your gas mileage. The Federal Trade Commission warns that most of these https://www.ftc.gov/news-events/news/press-releases/2011/05/ftc-offers-tips-stretch-your-gas-dollars gas-saving gadgets do not work. Stick to well-known apps, and be cautious about anything that asks for more financial information than a basic payment method.
If you cannot afford gas right now
Sometimes the problem is not your car at all. There is simply no money for gas this week, and you still have to get to work or to a medical appointment. That is a different situation, and there is help for it.
Some charities, churches, nonprofits, and community programs hand out emergency gas vouchers or gas cards to people who qualify, usually for a specific reason like getting to a job, a medical treatment, or a job interview. They are limited, but they exist. The free gas vouchers and gas cards guide on this site explains who gives them out, who qualifies, and how to ask.
Local churches sometimes help with both gas and the car repairs that decide whether your vehicle runs at all. The guide to churches that help with gas and car repairs covers groups like St. Vincent de Paul and Catholic Charities that may be able to help.
If keeping a car on the road is the real struggle, it can help to look at the wider picture of help with car payments and transportation costs. For some people, the steadier answer is rethinking the vehicle itself rather than spending more and more on fuel and repairs for a car that is costing too much to keep.
Disclaimer: How much gas you save depends on your specific car, its condition, and how and where you drive. The maintenance and driving suggestions here are general information, not a promise of any particular savings. Talk to a trusted mechanic about repairs for your own vehicle.
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