Gas Prices in San Diego, CA Today

Updated April 5, 2026 — Prices updated regularly from EIA data

$4.51

Average Regular Unleaded — San Diego, California

Current Gas Prices in San Diego

The going rate for a gallon of regular unleaded in San Diego, California is $$4.51 today. Local price variation gives shoppers a meaningful advantage when they take a few minutes to compare nearby stations.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$4.5187 octane▲ Rising
Mid-Grade$5.2189 octane▲ Rising
Premium$5.6391-93 octane▲ Rising
Diesel$6.10N/A▲ Rising

Price Comparison

San Diego Average
$4.51
Regular Unleaded
California State Average
$4.76
$0.25 below the California average
National Average
$3.99
$0.52 above the national average

About Gas Prices in San Diego

The best time to buy gas in San Diego follows the national pattern: Tuesday and Wednesday consistently show the lowest weekly prices, while Thursday through Sunday prices climb with weekend demand. Monthly, prices often dip mid-month. Following these patterns in San Diego can save 5-15 cents per gallon.

Gas Prices by Brand in This City

Estimated prices based on brand modifiers. Sorted cheapest to most expensive.

CHEAPEST
Costco
$4.36
Speedway
$4.48
Circle K
$4.49
Sunoco
$4.52
Marathon
$4.53
BP
$4.55
Mobil
$4.56
Exxon
$4.57
Shell
$4.59
Chevron
$4.61

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A

Gas Prices in Nearby Cities

Chula Vista$4.53Irvine$4.65Santa Ana$4.64Riverside$4.57Anaheim$4.47Long Beach$4.68San Bernardino$4.55Fontana$4.75
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Frequently Asked Questions

Each gallon of gas in San Diego, California includes 18.4 cents in federal excise tax plus {tax} cents in California state fuel tax — a combined {totalTax} cents per gallon. On a 15-gallon fill-up, you pay ${taxTotal} in fuel taxes alone.
Today's average gas price in San Diego is $$4.51 per gallon for regular unleaded. Premium is approximately ${premPrice} and diesel runs ${dslPrice}. Individual station prices vary by 15-25 cents across the metro area.
The cheapest gas in San Diego is typically found at warehouse clubs (Costco, Sam's Club), high-volume discount chains like Circle K and Speedway, and stations in commercial strips with multiple competitors. Our brand comparison table shows current estimated prices by major brand in San Diego.
San Diego's current average of $$4.51 compares to the California statewide average of $$4.76. San Diego is $0.25 below the California average the state average, which is typical for a metro of its size and location.
Gas stations in San Diego typically update prices 1-3 times per week in response to wholesale market changes. Prices generally dip early in the week and rise Thursday-Sunday. Following weekly trends helps identify optimal fill-up windows.

Related Gas Price Pages

Gas Prices in CaliforniaCheapest Gas in San DiegoGas Prices Near San DiegoCompare All StatesRegular Unleaded in San DiegoPremium Gasoline in San DiegoDiesel Fuel in San DiegoShell - San DiegoExxon - San DiegoBP - San DiegoChevron - San DiegoMobil - San DiegoGas Prices in Chula VistaGas Prices in IrvineGas Prices in Santa Ana