Gas Prices in Fontana, CA Today

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

$4.75

Average Regular Unleaded — Fontana, California

Current Gas Prices in Fontana

At $$4.75 per gallon, Fontana's current gas prices are near the state average both the California average and the national benchmark. Savvy Fontana drivers know where to find the best prices in town.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$4.7587 octane▲ Rising
Mid-Grade$5.4989 octane▲ Rising
Premium$5.9391-93 octane▲ Rising
Diesel$6.43N/A▲ Rising

Price Comparison

Fontana Average
$4.75
Regular Unleaded
California State Average
$4.76
near the state average
National Average
$3.99
$0.76 above the national average

About Gas Prices in Fontana

For Fontana commuters filling up weekly, choosing the right station matters. Annual fuel spending for a 15-gallon weekly fill-up at ${price}/gallon totals roughly ${annualCost}. Cutting 10 cents per gallon through strategic choices saves about $78 annually — real money with zero sacrifice.

Gas Prices by Brand in This City

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

CHEAPEST
Costco
$4.60
Speedway
$4.72
Circle K
$4.73
Sunoco
$4.76
Marathon
$4.77
BP
$4.79
Mobil
$4.80
Exxon
$4.81
Shell
$4.83
Chevron
$4.85

Fuel Type Prices in This City

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

Gas Prices in Nearby Cities

San Bernardino$4.55Riverside$4.57Anaheim$4.47Santa Ana$4.64Irvine$4.65Los Angeles$4.70Long Beach$4.68San Diego$4.51Oxnard$4.72
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Frequently Asked Questions

Premium gas in Fontana is worth the extra cost only if your vehicle requires it. If your owner's manual says Required, always use premium. If it says Recommended, you may use regular with minimal performance loss. Never use regular in a vehicle that requires premium.
Costco offers the cheapest gas wherever it operates in the Fontana area. Among street stations, Circle K, Speedway, and Wawa (in applicable markets) consistently offer below-average prices. Shell, Chevron, and BP typically price above the local average.
At today's Fontana average of $$4.75 per gallon, a standard 13-gallon sedan tank costs ${fillCost} to fill. A larger 20-gallon SUV or truck tank runs ${truckFill}. Choosing the cheapest local station can save $3-5 on each fill-up.
Monday and Tuesday are statistically the cheapest days to buy gas in most US cities including Fontana. Prices rise Thursday through Sunday as weekend driving demand increases. Filling up Tuesday afternoon before price adjustments is a reliable strategy.
Fontana and surrounding cities typically track similar fuel prices given shared supply infrastructure. Differences of 5-15 cents between nearby cities are common depending on local tax differences and competition levels.

Related Gas Price Pages

Gas Prices in CaliforniaCheapest Gas in FontanaGas Prices Near FontanaCompare All StatesRegular Unleaded in FontanaPremium Gasoline in FontanaDiesel Fuel in FontanaShell - FontanaExxon - FontanaBP - FontanaChevron - FontanaMobil - FontanaGas Prices in San BernardinoGas Prices in RiversideGas Prices in Anaheim