Fuel costs add up fast, especially with daily driving around Johnson City and the surrounding area. A few real habits and maintenance basics can make a genuine difference at the pump.
1. Slow Down and Drive Steady
Fuel economy drops noticeably at higher highway speeds, and aggressive acceleration and braking waste fuel that steady, predictable driving doesn't.
2. Keep Tires Properly Inflated
Underinflated tires increase rolling resistance, which means your engine works harder to maintain speed. Checking pressure monthly is a genuinely easy win.
3. Don't Ignore a Check Engine Light
A misfire or a failing sensor can quietly hurt fuel economy even when the car still drives fine. See our guide on what to do when your check engine light comes on.
4. Keep Up With Air Filter and Fluid Changes
A clogged air filter forces the engine to work harder than it needs to. Regular maintenance keeps everything running at its intended efficiency.
5. Reduce Excess Weight and Drag
Unnecessary cargo, and roof racks or carriers left on when not in use, both reduce fuel economy more than most drivers realize.
Why maintenance matters here too
A well-maintained engine and properly inflated tires aren't just about longevity, they genuinely affect what you pay at the pump every week.
What We Commonly See
One thing we see often is a customer surprised at how much a simple tire pressure check and an overdue air filter change improved their fuel economy, changes that cost very little but add up every single week at the pump.
See our full preventive maintenance page or our guide on tire care.
Fuel Economy FAQ
How much does aggressive driving actually hurt fuel economy?
According to the EPA, aggressive driving can lower fuel economy by 15 to 30 percent at highway speeds and 10 to 40 percent in stop-and-go traffic.
Does tire pressure really affect gas mileage?
Yes, underinflated tires increase rolling resistance, making the engine work harder and lowering fuel economy.
Can a check engine light affect fuel economy?
Yes, a misfire or failing sensor can quietly hurt fuel economy even when the car still drives normally.
Does carrying extra weight really matter for MPG?
Yes, unnecessary cargo and unused roof racks both add drag and weight that reduce fuel economy more than most drivers realize.
Is highway or city driving worse for fuel economy?
It depends on driving style in both, but aggressive acceleration and braking hurt fuel economy more in stop-and-go city driving than steady highway cruising.
Learn more about American & Import Auto Repair.
NC
Nick Clark Contributing Writer
Nick writes on car care and repair topics for American & Import Auto Repair, translating what our technicians see every day into plain-language guidance.