Gas Prices in San Diego, CA
Updated May 21, 2026 · AAA data · Regular unleaded
Gas Prices in San Diego
San Diego gas prices typically run slightly below Los Angeles but still among the most expensive in the US. ARCO dominates the price-competitive segment; Costco in Santee and Mission Valley regularly offers the metro's best deals. Border-area stations near Chula Vista can run slightly cheaper due to cross-border competitive pressure.
Prices at individual stations can vary by 5–15 cents within the same city depending on brand, location, and local competition. Use apps like GasBuddy to find the cheapest station near you in San Diego.
Frequently Asked Questions
What is the gas price in San Diego right now?
The average regular unleaded price in San Diego, California is $6.290/gal as of May 21, 2026. Station prices vary — expect a range of roughly $6.190 to $6.410 across the metro area.
Is San Diego gas cheaper than Los Angeles?
Yes — San Diego typically runs 5-15¢ cheaper than LA, benefiting from slightly lower operating costs and different refinery supply dynamics. Both cities use CARB fuel and pay California's full tax, but LA's density and operating costs add an extra premium.
Can I get cheaper gas near the Mexico border?
Stations in Chula Vista and National City near the border sometimes run competitive prices driven by cross-border awareness (though US gas is already cheaper than Mexico for most grades). ARCO and 7-Eleven stations south of the I-8 tend to be the most competitive.
When is the cheapest day to buy gas in San Diego?
Nationwide data shows Monday and Tuesday tend to have slightly lower gas prices before weekly demand picks up. Avoid buying gas Thursday through Saturday when prices are typically higher.