Gas Pain, Week of September 7, 2026

Gas got noticeably more expensive. The U.S. average for regular jumped 9¢ in a week to $4.16 a gallon for the week of September 7, 2026. Over the past 12 weeks it was up $0.24, from $3.91 to $4.16.

California was the most expensive state at $5.68, $1.52 above the national figure, with Washington at $5.48 and Alaska at $4.97 (West Coast excl. California regional average) next. At the other end Texas was cheapest at $3.62, $0.54 below national, followed by New Mexico at $3.69 (Gulf Coast regional average) and Mississippi at $3.69 (Gulf Coast regional average). The gap between the priciest and cheapest state was $2.06 a gallon, which on a 15-gallon tank was $30.90 for the same fill. The ranking counts all 50 states, with the regional average standing in wherever EIA publishes no state figure.

Washington climbed the most, up $0.22 to $5.48; California (+$0.16) and Alaska (+$0.15) also rose. No state fell more than half a cent.

At the national average a 15-gallon tank cost $62.36 to fill from empty and a 26-gallon truck tank $108.08; think mid-size sedan and full-size pickup. That was $1.29 more than the week before on the smaller tank and $2.24 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.