Gas prices at the pump at a Wawa gas station in Aston, Pennsylvania, in May 2026.


The value displayed above that third button on the gas pump averaged more than $5.40 for a number of days this spring. American drivers nonetheless couldn’t get sufficient.

Premium gas now prices round a buck a gallon greater than common – far more than the value “premium” that drivers paid for the higher-octane stuff a decade in the past.

Yet demand for premium gas is up. That makes some sense: More new automobiles suggest or require premium-grade octane ranges of at the very least 91. But many drivers falsely consider high-octane gas presents a form of deal with for their engines.

High gas costs throughout the Iran conflict by no means actually modified Americans’ driving habits. That’s notably true for homeowners of higher-end SUVs, vans and luxurious cars that really want a better octane stage.

Whatever the rationale for the rise in demand, gas stations have turbocharged value hikes for premium gas over the previous couple many years, making a revenue engine for station homeowners.

Historically, high-octane gas has price about 20 cents a gallon greater than common – barely budging for many years. But that distinction began to steadily widen round 2005 earlier than taking off like a rocket a decade later.

That hole grew to 40 cents in 2015, hit 60 cents in 2018 and crossed 80 cents in 2022, in accordance with the Energy Information Administration. It’s just under $1 as we speak.

Higher refining prices are partially guilty. In the mid-2000s, two federal laws went into impact that required automakers to decrease automobiles’ sulfur output – which additionally reduces octane. To protect premium’s greater octane stage, refineries add cleaner-burning, higher-octane — and costlier – ethanol to their blends.

Gas prices at the pump at a Wawa gas station in Aston, Pennsylvania, in May 2026.

But the ethanol price was marginal – not practically as a lot because the surge in retail costs would have you ever consider: Although the distinction between premium and common gas widened by 70 cents a gallon over the previous twenty years, the hole in wholesale costs rose by simply 20 cents a gallon since 2007, in accordance with the EIA.

In different phrases: Premium gas has develop into pure revenue for gas stations.

“Who do you think is making the money? It’s the service station,” stated Andy Lipow, president of Lipow Oil Associates.

Increased demand

That hasn’t stored clients away: Premium made up round 13% of general gas gross sales final 12 months, up from 9% in 2013, in accordance with Lipow.

That’s partly as a result of the variety of new cars with engines that require or suggest premium has surged. By 2018, they eclipsed the variety of new automotive fashions that suggest common gas, in accordance with the Department of Energy.

That elevated want led stations to cost extra for premium – a value that automotive -owners have confirmed prepared to pay.

Vehicles that want premium gas are usually costly ones, luxurious cars and huge vans or SUVs.

“The people who need to use premium aren’t the ones who are concerned about paying for it,” stated Tom Kloza, an unbiased oil analyst.

But new cars aren’t the one cause individuals purchase premium gas. Some drivers purchase it, even when their cars don’t want it.

“The consumer likes to put premium gas in their car because they think it gives them better performance,” stated Lipow.

A century of selling created that notion.

Premium gas hit the market in 1923, when General Motors and Esso fashioned Ethyl Corp, an organization that bought a gas additive known as tetraethyllead, or TEL. The additive made engines extra environment friendly and fewer inclined to “knocking,” – when un-ignited gas spontaneously combusts.

“Ethyl” gas turned synonymous with an improve over common, lengthy in any case gasolines started together with TEL, according to AAA. Because Ethyl was a licensed trademark, gas stations that used non-Standard Oil fuels began calling their high-performance merchandise “premium,” which steadily turned the business commonplace lingo.

A billboard shows an advertisement for Ethyl gasoline at a Diamond D-X Service Station in Madison, Wisconsin, in May 1935.

In the mid-Fifties automakers began promoting some high-end cars with turbocharged engines that power and compress extra air into combustion cylinders. Those high-compression-ratio engines can elevate a automotive’s gas economic system, however additionally they improve the prospect of engine knocking. So gas stations began producing and advertising and marketing high-octane “premium” gas for higher-efficiency engines.

With the appearance of fuel-injected engines that gathered carbon deposits, oil refiners within the Eighties and Nineteen Nineties began promoting detergents in their premium gas that might clear away the gunk. When the EPA required these detergent components in 1996, gas stations began promoting “Top Tier” gas with even higher efficiency.

More just lately, gas stations have began competing on octane ranges. Although “premium” usually requires an octane stage of at the very least 91, many stations supply a lot greater ranges. On the East Coast, 93 octane has develop into typical, Lipow famous, and Sunoco just lately began promoting Ultra 94 with even greater octane ranges.

But octane is only a measure of gas stability and resistance to knocking; it doesn’t make your automotive go sooner. The effectivity comes from the engine mechanics itself – not a better octane stage.

Resistance to knocking, for turbocharged engines that want it, could make an engine extra environment friendly, including elevated ignition timing, longer burn cycles, larger vitality extraction from the air-fuel cost within the cylinder and better torque and horsepower, in accordance with AAA.

But premium gas supplied zero advantages to cars constructed for normal 87-octane gas, AAA present in a 2016 study. Those engines don’t want the upper octane stage as a result of they don’t undergo from the identical knocking considerations.

Even cars that do profit from premium gas most likely don’t want something above 91 octane. Few cars require it. So 93 or 94 isn’t getting you any elevated efficiency.

“It’s a marketing thing,” stated Lipow. “You’re paying more for something that supposedly gives you a slight increase in energy. But most people will never see it.”

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