Car Maintenance That Improves Gas Mileage

Most drivers know that slowing down and avoiding aggressive driving can save gas. But how well your vehicle is maintained also affects how much fuel it uses.

According to mechanic Chris Stevenson, routine maintenance helps your engine and tires operate more efficiently, which can improve fuel economy and reduce unnecessary wear. Oil executive Chris Faulkner also notes that a few simple maintenance habits can help every tank of gas go a little farther.

While no maintenance task will magically add 10 miles per gallon, keeping your vehicle in good condition helps ensure you’re getting the fuel economy it was designed to deliver.

1. Keep Your Tires Properly Inflated

Underinflated tires create more rolling resistance, forcing your engine to work harder.

Chris Faulkner notes that even a small drop in tire pressure can reduce fuel economy. Tire pressure naturally changes with the weather, so it’s worth checking your tires regularly rather than waiting until one looks low.

Use the tire pressure listed on the driver’s door jamb or in your owner’s manual rather than the maximum pressure printed on the tire sidewall.

2. Replace a Dirty Engine Air Filter When Needed

Your engine needs clean air to burn fuel efficiently.

Chris Stevenson explains that a clogged air filter can restrict airflow, though its effect on fuel economy varies by vehicle. Replacing a dirty filter is inexpensive and is part of routine maintenance.

Follow your manufacturer’s replacement schedule or inspect the filter during oil changes if it’s easy to access.

3. Stay Current on Oil Changes

Clean oil reduces friction inside the engine and helps it run efficiently.

Using the oil grade recommended by your manufacturer and changing it at the recommended intervals helps keep the engine performing its best.

4. Follow Your Vehicle’s Maintenance Schedule

Modern vehicles are designed to run efficiently when they’re properly maintained.

Replacing worn spark plugs, addressing ignition problems and following the service schedule in your owner’s manual can help prevent fuel economy from gradually declining.

Stevenson recommends following the manufacturer’s maintenance intervals rather than waiting until problems develop.

5. Keep Your Wheels Properly Aligned

If your wheels are out of alignment, your tires drag slightly instead of rolling smoothly.

Besides reducing gas mileage, poor alignment causes uneven tire wear and can shorten tire life.

If your vehicle pulls to one side or your steering wheel isn’t centered, it’s worth having the alignment checked.

6. Remove Roof Racks When You’re Not Using Them

Roof racks, cargo boxes and bike carriers create aerodynamic drag, especially at highway speeds.

If you only use them occasionally, removing them between trips can help improve fuel economy while also reducing wind noise.