Gas Pain, Week of August 18, 2025

The U.S. average for regular gasoline edged up 1¢ to $3.13 a gallon for the week of August 18, 2025. Over the past 12 weeks it had finished exactly where it started.

Washington was the most expensive state at $4.31, $1.19 above the national figure, with California at $4.27 and Alaska at $3.80 (West Coast excl. California regional average) next. At the other end New Mexico was cheapest at $2.75 (Gulf Coast regional average), $0.38 below national, followed by Mississippi at $2.75 (Gulf Coast regional average) and Louisiana at $2.75 (Gulf Coast regional average). The gap between the priciest and cheapest state was $1.57 a gallon, which on a 15-gallon tank was $23.52 for the same fill. The ranking counts all 50 states, with the regional average standing in wherever EIA publishes no state figure.

Ohio climbed the most, up $0.16 to $3.08; Texas (+$0.11) and Alabama (+$0.06) also rose. Delaware fell the most, down $0.02 to $3.10; Maryland (−$0.02) and New Jersey (−$0.02) also fell.

At the national average a 15-gallon tank cost $46.88 to fill from empty and a 26-gallon truck tank $81.25; think mid-size sedan and full-size pickup. That was $0.11 more than the week before on the smaller tank and $0.18 on the larger one. Of the ten states at the extremes, 8 were shown at a regional average, because EIA publishes a weekly state figure for only 9 states and the rest take the average of their PADD region. Every figure here was from EIA's weekly retail gasoline series for that week.