Fuel Efficiency Myths: What Really Saves You Gas?
Let’s bust some of the most common fuel-saving myths so you can make smarter decisions behind the wheel—and get the most out of every tank.
With gas prices always on the rise in Southern California, drivers in Corona Hills are constantly looking for ways to save at the pump. Unfortunately, there’s a lot of misinformation out there about what really helps—and what’s just wishful thinking.
At Super Service of Corona Hills, we’re all about facts over fiction. Let’s bust some of the most common fuel-saving myths so you can make smarter decisions behind the wheel—and get the most out of every tank.
Myth #1: Premium Gasoline Boosts Fuel Economy in All Cars
Premium gas is more expensive, so it must be better for mileage, right? Not exactly. Unless your vehicle specifically requires premium fuel, using it won’t improve performance or efficiency. In fact, regular unleaded is perfectly fine—and often recommended—for most vehicles.
The Truth: Use the fuel grade your owner's manual recommends. Anything more is just extra cost with no benefit.
Myth #2: Warming Up Your Car Saves Fuel
It’s a common belief that letting your engine idle before driving improves performance. While this was true decades ago, modern engines are built to operate efficiently with minimal warm-up time.
The Truth: Extended idling burns gas unnecessarily. A few seconds is enough—just start driving gently to let your engine reach optimal temperature.
Myth #3: Rolling Down Windows Is Always Better Than A/C
You’ve probably heard that running the air conditioning kills your fuel efficiency. While it’s true A/C uses power, driving with the windows down—especially at higher speeds—creates aerodynamic drag that can also reduce MPG.
The Truth: At slower speeds, open windows are fine. On the freeway, you’ll often get better mileage with the windows up and the A/C on a low setting.
Myth #4: Fuel Additives Dramatically Increase MPG
Gas station shelves are filled with fuel additives claiming to boost performance and improve mileage. While some have benefits in specific situations, they’re not a magic fix.
The Truth: Most drivers won’t see significant MPG improvements from additives alone. Regular maintenance, clean air filters, and tire pressure checks do far more for your wallet.
Myth #5: Small Cars Always Get Better MPG
Smaller vehicles do tend to use less fuel, but that’s not always the case. Advances in engine technology mean many midsize sedans, hybrids, and even some SUVs can match or outperform smaller cars in terms of efficiency.
The Truth: Fuel economy depends more on the engine, transmission, and how the vehicle is driven—not just its size.
FAQ: Real Ways to Improve Fuel Economy
1. What’s the best way to save fuel in city driving?
Avoid rapid acceleration and hard braking. Smooth, steady driving improves efficiency and puts less wear on your brakes and tires.
2. How often should I check my tire pressure?
At least once a month. Underinflated tires create rolling resistance, which decreases fuel economy and increases tire wear.
3. Can dirty oil reduce gas mileage?
Yes! Old, dirty oil increases engine friction and reduces efficiency. Stick to your oil change schedule to keep your engine running smoothly.
4. Does carrying extra weight affect mileage?
Absolutely. The heavier your vehicle, the more energy it takes to move. Clear out your trunk and remove unnecessary roof racks to cut back on drag and weight.
5. Should I get a fuel system cleaning to boost MPG?
If your vehicle has high mileage or you've noticed sluggish performance, yes. A professional fuel system cleaning can restore lost efficiency and help your engine run cleaner.
Can My Repairs Be Covered By My Aftermarket Warranty?
Super Service of Pomona Valley has been getting very busy with aftermarket warranties! We do them all, especially CarMax aftermarket warranties. The local CarMax team is reportedly 3 weeks backed up, and we have been getting a lot of overflow.
Our auto repair team works on all aftermarket warranties at all of our Super Service locations. The main aftermarket warranties we work with include:
- CarMax
- Fidelity
- CNA
- Assurance
- AAA
- Progressive
- Mercury
Boost Your MPG with Help from Super Service of Corona Hills
Want to stop wasting gas and start driving smarter? From tune-ups to air filter replacements, we’ve got the services that actually improve your fuel economy—no myths required.
Call
(951) 256-7886, visit us at
2189 Sampson Ave #101a, Corona, CA, orbook online today. Let’s put real savings back in your tank.
