Improving your fuel efficiency does not always require fancy gadgets or new technology. Regular, simple car maintenance can help your vehicle run more efficiently, saving you money at the pump over the long term. Here’s a list of easy maintenance tasks that deliver real-world fuel economy benefits.
- Keep Your Tires Properly Inflated
Underinflated tires can lower gas mileage by up to 3%, according to the U.S. Department of Energy. Check your tire pressure at least once a month and keep it at the manufacturer’s recommended level, usually printed inside the driver’s door frame. - Replace Dirty Air Filters
A clogged or dirty air filter reduces engine airflow, causing your engine to work harder and burn more fuel. Replacing your air filter regularly (or cleaning it if reusable) can improve acceleration and overall efficiency, especially in older vehicles.
- Learn more: EPA Guide to Maintenance
- Get Regular Oil Changes Using the Right Oil
Using the correct motor oil recommended by your car’s manufacturer can improve your gas mileage by 1–2%. Look for motor oils labeled “Energy Conserving” on the API performance symbol to maximize fuel savings. - Maintain the Spark Plugs
Worn or dirty spark plugs can misfire, wasting fuel and lowering your miles per gallon. Check and replace spark plugs according to your vehicle’s maintenance schedule, usually between 30,000 to 100,000 miles depending on the type. - Align Your Wheels
Misaligned wheels cause your tires to drag slightly, reducing fuel efficiency and causing premature tire wear. If your car pulls to one side or your steering wheel is off-center, it’s time for an alignment check. - Replace Oxygen Sensors When Needed
Faulty oxygen sensors are one of the most common reasons for reduced gas mileage. The EPA reports that replacing a malfunctioning oxygen sensor can improve fuel economy by up to 40%. - Regularly Inspect and Maintain Brakes
Dragging brakes can cause unnecessary resistance and lower your MPG. Have your brake system inspected during regular services and replace worn parts promptly. - Clean Out Your Trunk and Backseat
Unnecessary weight cuts into fuel economy. Remove heavy items you don’t need, and if possible, remove roof racks when not in use to improve aerodynamics.
Bonus Tip: Use Fuel System Cleaners Sparingly
Some fuel system cleaners can help restore injector efficiency, but they are usually only beneficial if your vehicle is older or showing signs of deposit build-up. Use reputable products and follow the manufacturer’s recommendations.
Fuel-Efficient Maintenance Checklist:
- Check tire pressure monthly
- Replace air filters and spark plugs as needed
- Stick to oil change intervals with correct oil
- Align wheels and inspect brakes
- Replace oxygen sensors when necessary
Small maintenance habits can add up to big fuel savings—and help your vehicle last longer with fewer costly repairs.
