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In the United States, the posted gasoline octane rating is the average of two different testing methods, the Research Octane Number (RON) and the Motor Octane Number (MON). The average is referred to as the Anti-Knock Index (AKI). Most U.S. LDV are designed for regular, 87 AKI gasoline.
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To assess octane costs, this study examines trends at the national, the Petroleum Administration for Defense District (PADD), and the regional wholesale market levels. The market for motor gasoline is global, and the U.S. gasoline market is interconnected with the global gasoline market through imports and exports.
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Nov 17, 2022 · In recent years, car manufacturers have been requiring or recommending premium gasoline (a high-octane grade of fuel) for use in more of their vehicle models. The difference in prices between premium and lower octane grades has also increased.
- Introduction
- Executive Summary
- Phase 1: Analysis of Gasoline Octane Costs
- Phase 2: Future Gasoline Octane Scenarios
In 2017, the U.S. average retail premium gasoline price was $0.50 per gallon (gal) more than the price of regular gasoline. The difference between premium gasoline and regular gasoline prices began to increase in approximately 2010. The cause of this price spread may be the result of a change in U.S. refinery operations or retail gasoline pricing d...
In the United States, since approximately 2010, the price difference between regular gasoline with an octane rating, or Anti–Knock Index (AKI), of 87, and premium gasoline with an AKI of 91 has been increasing. Between 2010 and 2017, the U.S. average retail price difference between premium gasoline and regular gasoline doubled, from approximately $...
This section examines the possible causes for the increasing premium–to–regular price spread related to the production of motor gasoline and its components at refineries in the United States. To that end, EIA retained Baker & O’Brien to analyze the factors and conditions at refineries that could result in the increasing spread. Baker & O’Brien’s an...
In Phase 2, Baker & O’Brien analyzed whether or not the U.S. domestic refining industry would be capable of meeting higher octane demand if the octane requirements for retail gasoline increased. The scenario assumes that, beginning with model year 2023, all light–duty vehicles in the United States will require a minimum 95 research octane number (R...
A minimum 82 octane fuel is recommended for most vehicles produced since 1984. Older cars with carburetors could operate with lower octane fuel at higher elevations. Regardless of legality fuel with an octane rating of less than 82 is generally not offered for sale in most states.
Nov 24, 2015 · The typical way the recommended fuel octane is listed is as follows: XX Octane (sometimes “AKL” is put in place of octane) recommended; XX Octane minimum; Using a fuel with an octane rating under the minimum requirement is likely to cause engine knocking. Choose fuel based on the octane number, not the name (regular, premium, etc.) of the ...
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Dec 15, 2022 · Typically, in the U.S., octane ratings range between the Regular 87 and Premium 94, depending on the distributor and your region. An 87-octane fuel contains 87% iso-octane (a hydrocarbon that...
