Gas Pain, Week of September 14, 2026

Gas got noticeably more expensive. The U.S. average for regular jumped 16¢ in a week to $4.32 a gallon for the week of September 14, 2026. Over the past 12 weeks it was up $0.49, from $3.83 to $4.32.

California was the most expensive state at $5.83, $1.51 above the national figure, with Washington at $5.50 and Alaska at $5.03 (West Coast excl. California regional average) next. At the other end Texas was cheapest at $3.81, $0.51 below national, followed by New Mexico at $3.85 (Gulf Coast regional average) and Mississippi at $3.85 (Gulf Coast regional average). The gap between the priciest and cheapest state was $2.02 a gallon, which on a 15-gallon tank was $30.31 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 $0.26 to $4.15; Florida (+$0.24) and Illinois (+$0.20) also rose. No state fell more than half a cent.

At the national average a 15-gallon tank cost $64.78 to fill from empty and a 26-gallon truck tank $112.29; think mid-size sedan and full-size pickup. That was $2.43 more than the week before on the smaller tank and $4.21 on the larger one. Of the ten states at the extremes, 7 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.