GasBuddy Weekly Gas Prices: Week of September 15th

Mon, Sep 15, 2025 · 9:00 AM ET Source Next release · Nov 9, 9:00 AM ET

U.S. average gasoline prices fell -3.6¢ last week to $3.12/gal, down -1.8¢ from a month ago and -2.8¢ YoY, while diesel prices dropped -2.6¢ to $3.658/gal, reflecting mixed regional trends.

  • The most common U.S. gas price was $2.99/gal, unchanged from last week, with a median price of $2.95/gal (-4¢ WoW and -17¢ below the national average).

  • Mississippi ($2.68), Oklahoma ($2.73), and Arkansas ($2.75) reported the lowest state averages, while California and Washington (both $4.64) and Hawaii ($4.45) remained highest.

  • Oregon (+21.5¢) and Washington (+20.7¢) posted the largest weekly increases due to infrastructure issues, while Florida (-16.4¢), Ohio (-15.2¢), and Michigan (-13.9¢) saw the sharpest declines.

  • Diesel’s most common price was $3.49/gal (-20¢ WoW), with a median of $3.54/gal (-5¢ WoW, -12¢ below the national average).

  • Diesel prices were lowest in Texas ($3.20), Mississippi ($3.27), and Louisiana ($3.30), and highest in Hawaii ($5.15), California ($5.12), and Washington ($5.03).

  • U.S. crude inventories rose +3.9M bbl WoW, gasoline stocks increased +1.5M bbl, and distillates rose +4.7M bbl, while refinery utilization edged up to 94.9%.

  • WTI crude held near $63/bbl and Brent near $67/bbl, with prices supported by OPEC+ output constraints and Russian supply disruptions but capped by rising inventories.