When gas prices rise, drivers often search for any advantage to stretch their fuel budget. Unfortunately, many popular gas-saving “tips” are actually myths that either make no difference or could end up costing you more in the long run. Relying on credible sources like the U.S. Department of Energy and AAA, here is a breakdown of the most common gas-saving myths—and what you should actually do instead.
Myth 1: Idling Saves More Fuel Than Restarting Your Engine
Some drivers believe it is better to let the car idle if stopping briefly, but the U.S. Department of Energy confirms that idling longer than 10 seconds uses more fuel than restarting the engine. Modern engines are designed to restart efficiently without wasting fuel or causing excessive wear. Shutting off your engine during extended stops is the smarter, more fuel-efficient choice.
Myth 2: Fueling Up Early in the Morning Means Getting Denser Gas
The idea is that cooler morning temperatures make gasoline denser, giving you slightly more energy per gallon. While this sounds logical, underground fuel tanks at gas stations are insulated and not affected by surface temperature swings, according to AAA. Whether you fill up at 6 AM or 6 PM, the density of the gas will be roughly the same.
Myth 3: Premium Gas Provides Better Fuel Economy in Any Car
Unless your owner’s manual specifies that your engine requires premium gasoline, paying extra at the pump brings no real benefit. Save money by sticking to the fuel grade recommended by your manufacturer.
Myth 4: Fuel Additives Instantly Boost MPG
Many aftermarket fuel additives claim to improve fuel efficiency dramatically. However, according to the EPA, there is limited independent evidence that these products significantly boost fuel economy. Routine maintenance, like timely oil changes and air filter replacements, is much more effective for maximizing MPG.
Myth 5: Keeping Windows Closed Always Saves Fuel
While open windows do cause aerodynamic drag, Consumer Reports found that at lower speeds (especially in city driving), the impact on fuel economy is minimal. Air conditioning, on the other hand, can significantly reduce your fuel efficiency, particularly in stop-and-go traffic. The best approach is to use windows in slow traffic and AC sparingly on the highway.
Smarter Ways to Save on Gas
Instead of relying on myths, focus on proven strategies like maintaining proper tire pressure, driving smoothly, and finding cheaper fuel prices with apps like GasBuddy. Additionally, maximize cashback rewards by using Fluz to purchase discounted gift cards for gas brands like Shell and BP, allowing you to earn instant savings every time you fill up.
Bottom Line
Separating fact from fiction is key to truly maximizing your gas savings. Stick with evidence-backed practices and avoid wasting money on tips that sound good but deliver little. With the right strategy, you can protect your budget at the pump without falling for costly myths.
