Gasoline prices stayed largely unchanged this week, remaining at their highest levels in nearly four years. The national average for regular fuel reached $4.49 per gallon as of May 18.
Gas prices were relatively flat nationwide, with regular gasoline down one cent and premium fuel holding steady compared to the prior week. The national average stood at $4.49 per gallon for regular and $5.45 for premium, according to recent data.
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AAA’s daily state averages show that gasoline prices in late May 2026 were generally higher in several Democratic-led states—particularly on the West Coast—than in many Republican-led states, reflecting a mix of state fuel taxes, boutique fuel requirements, supply constraints and broader oil-market forces.
National average gasoline prices fell slightly for the second consecutive week as of May 25. The decline comes even as costs stay near their highest level in almost four years.
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The National Petroleum Company reported minor fuel price changes on Wednesday that take effect Thursday, May 7. 93-octane gasoline rises 0.1 pesos per liter and diesel falls 47.3 pesos, while kerosene stays the same.
Drivers in the Philippines can expect significant fuel price rollbacks starting June 2 amid optimism over potential peace negotiations between the United States and Iran.
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Chile's National Petroleum Company (Enap) released its weekly price report, showing rises in gasoline and diesel prices from Thursday, April 16. 93-octane gasoline will increase by $20.2 per liter and 97-octane by $22.3, while diesel rises $36.4. The Mepco mechanism cushioned the hike, according to the undersecretary of Finance.