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High gas prices aren't going away soon, but if you're paying extra for premium, you probably can save the money. And don't even think about midgrade.
lower octane gas can be sold if labeled as "sub-standard" or "sub-regular" [11] South Dakota: 85/87 87/89 91 85 octane must be sold with a warning label displayed at the pump. [12] 85 and 86 octane can be sold as regular fuel only in the counties of Butte, Custer, Fall River, Harding, Lawrence, Meade, Oglala Lakota, Pennington, and Perkins.
"Regular" unleaded fuel is 95 RON; "Premium" fuel is rated at 97 RON (Shell's V-Power Racing is rated minimum 97 RON). Petron sells 100 RON in selected outlets. [70] Mexico: The standard octane index is 87 AKI for regular fuel and anywhere from 91 to 93 AKI for premium fuel, although 91 AKI is the most common octane number for premium fuel.
The largest component of the average price of $2.80/gallon of regular grade gasoline in the United States from 2012 through 2021, representing 54.8% of the price of gas, was the price of crude oil. The second largest component during the same period was taxes—federal and state taxes representing 17% of the price of gas.
The price of regular unleaded gas on average was $3.063 per gallon on Tuesday, down from $3.183 a month ago and $3.313 a year ago, according to AAA. This story has been updated with new information.
The national average price for a gallon of regular unleaded gas is currently $3.40. Of the major metropolitan areas surveyed in Missouri, drivers in Columbia are paying the most at $3.28 on average.
The octane rating of typical commercially available gasoline varies by country. In Finland, Sweden, and Norway, 95 RON is the standard for regular unleaded gasoline and 98 RON is also available as a more expensive option. In the United Kingdom, over 95 percent of gasoline sold has 95 RON and is marketed as Unleaded or Premium Unleaded.
Gasoline marketers agree when they sign on to Top Tier program that all their grades of gasoline meet these standards. [10] However, premium grade gasoline may have yet higher levels of detergent additives. [11] Typically, Top Tier gasoline will contain two to three times the amount of detergent additives currently required by the EPA. [12]