Costco Gas Prices in San Antonio, TX

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

$2.60

Costco Regular Unleaded — Est. price in San Antonio

About Costco Fuel

Costco Wholesale operates fuel stations at most of its warehouse locations, offering some of the consistently lowest gas prices in America. Costco's massive purchasing power allows it to undercut traditional retail stations by 10-25 cents per gallon. Costco fuel meets TOP TIER detergent standards and is the same quality as brand-name alternatives at a significant discount.

Costco Loyalty Program

Costco membership required ($65/year individual or $130/year Executive). Executive members earn 2% back on all Costco purchases including fuel. For a family filling up weekly, fuel savings alone often exceed the membership cost.

Brand Price Comparison in San Antonio

BrandEst. Pricevs. Costco
Costco THIS PAGE$2.60
Speedway$2.72+$0.12
Circle K$2.73+$0.13
Sunoco$2.76+$0.16
Marathon$2.77+$0.17
BP$2.79+$0.19
Mobil$2.80+$0.20
Exxon$2.81+$0.21
Shell$2.83+$0.23
Chevron$2.85+$0.25

Costco Prices in Nearby Cities

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Frequently Asked Questions

Costco membership required ($65/year individual or $130/year Executive). Executive members earn 2% back on all Costco purchases including fuel. For a family filling up weekly, fuel savings alone often exceed the membership cost. Consistent use of the Costco loyalty program can realistically save 5-15 cents per gallon, adding up to $40-120 annually for a typical driver filling up weekly.
Costco Wholesale operates fuel stations at most of its warehouse locations, offering some of the consistently lowest gas prices in America. Costco's massive purchasing power allows it to undercut traditional retail stations by 10-25 cents per gallon. Costco fuel meets TOP TIER detergent standards and is the same quality as brand-name alternatives at a significant discount. All major brands including Costco must meet federal minimum fuel standards. TOP TIER certified brands go beyond minimums with enhanced detergency additives proven to reduce engine deposits.
Costco fuels meet all federal quality standards. TOP TIER certification means enhanced detergency additives provide measurable engine protection benefits beyond the legal minimum.
Costco has a presence in the San Antonio, Texas market. Use the Costco station locator app or website to find the nearest Costco station and current prices.

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All Gas Prices in San AntonioCheapest Gas in San AntonioGas Prices in TexasShell in San AntonioExxon in San AntonioBP in San AntonioChevron in San AntonioMobil in San AntonioCircle K in San AntonioRegular Unleaded at CostcoPremium Gasoline at CostcoDiesel Fuel at Costco