Gas Pain, Week of December 15, 2025

The U.S. average for regular gasoline slipped 4¢ to $2.90 a gallon for the week of December 15, 2025. Over the past 12 weeks it was down $0.22, from $3.12 to $2.90.

California was the most expensive state at $4.16, $1.27 above the national figure, with Washington at $3.87 and Alaska at $3.50 (West Coast excl. California regional average) next. At the other end Colorado was cheapest at $2.29, $0.60 below national, followed by Texas at $2.47 and New Mexico at $2.49 (Gulf Coast regional average). The gap between the priciest and cheapest state was $1.87 a gallon, which on a 15-gallon tank was $28.04 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 $0.18 to $2.83; Texas (+$0.02) also rose. Florida fell the most, down $0.12 to $2.73; Washington (−$0.11) and California (−$0.11) also fell.

At the national average a 15-gallon tank cost $43.42 to fill from empty and a 26-gallon truck tank $75.27; think mid-size sedan and full-size pickup. That was $0.67 less than the week before on the smaller tank and $1.17 on the larger one. Of the ten states at the extremes, 6 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.