Do Americans Really Have 87, 89, 91 Octane?
Exploring the octane ratings available at American gas stations.
Understanding Octane Ratings in the U.S.
In the United States, gasoline is commonly available in three octane ratings: 87, 89, and 91. These numbers indicate the fuel's octane level, which measures its ability to resist engine knocking during combustion. The most widely used octane rating is 87, often referred to as regular unleaded gasoline. Mid-grade gasoline typically has an octane rating of 89, while premium gasoline is usually rated at 91 or higher.
The availability of these octane ratings can vary by region and gas station, but generally, you will find these three options at most locations across the country.
What Isn't Confirmed
While the octane ratings of 87, 89, and 91 are standard in many areas, there may be variations in availability or additional octane options in some regions. For example, some stations might offer higher octane fuels, such as 93, particularly in areas with high-performance vehicles or specific regional requirements. However, the standard ratings of 87, 89, and 91 are the most commonly reported and confirmed across the U.S.
Where to Verify
To verify the octane ratings available at your local gas stations, you can check the labels on the fuel pumps, which will clearly indicate the octane levels. Additionally, you can consult the official websites of major fuel retailers or local fuel regulations to get more information about fuel options in your area.
Answered from our EPA fuel data and general, well-established fuel facts in response to real driver questions. Anything car-specific — especially whether premium is required vs recommended — is in your owner's manual, so we point you there instead of guessing.
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EPA/DOE FuelEconomy.gov data retrieved 2026-10-25.