As gas prices continue fluctuating across Arizona and the rest of the country, many drivers are wondering whether buying the cheapest gas available could actually damage their vehicles over time. According to automotive experts featured by FOX 10 Phoenix, the answer depends largely on the quality of the gasoline, the octane requirements of the vehicle, and where drivers choose to fill up.
The report explained that lower gas prices do not automatically mean the fuel is harmful. Experts said most gasoline sold in the United States must meet federal fuel standards established by the Environmental Protection Agency. However, the quality of additives and detergents mixed into the gasoline can vary between brands and suppliers.
Automotive specialists interviewed in the story said one of the most important things drivers should pay attention to is whether they are using the correct octane level recommended by the manufacturer. Vehicles designed for premium gasoline may experience reduced performance, engine knocking, or lower fuel efficiency if lower-octane fuel is used regularly.
For many standard vehicles, however, experts said regular unleaded gasoline is perfectly acceptable if that is what the owner’s manual recommends. Using more expensive premium gas in vehicles that do not require it often provides little or no meaningful benefit for average drivers.
The article also discussed “Top Tier” gasoline, a fuel standard created by automakers that includes higher levels of engine-cleaning detergents compared to minimum federal requirements. Experts said Top Tier gasoline can help reduce carbon buildup inside engines and fuel systems over time. Many major fuel brands participate in the Top Tier program.
Mechanics explained that poor-quality gasoline from less reputable stations could sometimes contribute to clogged fuel injectors, rough idling, or engine deposits if the fuel lacks sufficient detergent additives. However, experts emphasized that major fuel contamination problems remain relatively uncommon.
The report noted that consumers should be cautious about extremely old or poorly maintained gas stations where fuel storage tanks may not be regularly inspected or maintained. Water contamination, dirt, or sediment inside underground tanks can occasionally create problems for vehicles if stations are not properly maintained.
Experts also recommended avoiding stations with unusually low customer traffic. Gasoline that sits too long underground can degrade over time, especially during Arizona’s extreme summer temperatures. Busy stations often cycle through fuel more quickly, which can help ensure fresher gasoline.
Drivers were additionally advised to avoid waiting until their fuel tanks are nearly empty before refilling. Mechanics said running vehicles on very low fuel levels repeatedly can increase the chances of pulling sediment from the bottom of the gas tank into the fuel system.
The story highlighted how many consumers are increasingly shopping around for the lowest fuel prices because of inflation and rising living costs. Gas price tracking apps and grocery reward programs have become more popular as drivers search for ways to reduce commuting expenses.
Experts ultimately said that while inexpensive gas is not necessarily dangerous for vehicles, drivers should focus more on buying fuel from reputable stations, using the correct octane level, and maintaining their vehicles properly rather than simply choosing the absolute cheapest gas available.
