States 5 min read · updated Nov 9, 2026
Why California fuel prices are so high
Cleaner-burning blends, state programs, higher taxes and an isolated refining market.
California diesel is $1.770 a gallon above the U.S. average in the latest EIA survey.
California consistently has the highest retail fuel prices in the lower 48. The reasons are structural.
- Its own fuel blends. California requires cleaner-burning gasoline and diesel formulations, so fuel from most other states cannot simply be shipped in.
- Isolation. No major pipelines connect California to refining centers in Texas and Louisiana; when an in-state refinery goes down, replacement supply arrives by ship and takes time.
- State programs and taxes. State excise tax, cap-and-trade and low-carbon fuel costs all reach the pump.
EIA reports California separately for both gasoline and diesel. See the California page and the West Coast region.