Is Costco Gas Good

Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

The Kroger Company



Founded 1883

; 139 years ago




Cincinnati, Ohio

, U.S.
Bernard Kroger
Cincinnati, Ohio


Number of locations
2,868, including 2,726 supermarkets and 142 jewelers (Q3 2021)


Area served
United States
Key people

Rodney McMullen



& Chairman)


Gary Millerchip (



Yael Cosset (



Stuart Aitken (






Other specialty,

Revenue Increase


132.5 billion




US$2.67 billion




US$2.585 billion



Total assets


US$45.3 billion



Total equity


US$7.88 billion



Number of employees
465,000 (2020)


Inter-American Products

various chains







  • Costco is famous for offering great prices on loads of your everyday essentials – gas included!
  • Costco is a great place to fill up your tank. However, before you decide whether Costco gas actually works well for your needs,

    I’ve done plenty of research, and here’s what I found out.

    Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

    Is Costco Gas Good In 2022?

    Kirkland Signature gas, Costco’s brand of Kirkland gasoline is high quality. This is standard gasoline that is far above the US government additives requirements. Costco also sells gas for several cents cheaper than average competitors.

    So, how much does high-quality gas cost at Costco? How come the gas prices are so low?

    You can find everything here including cost comparisons and drawbacks.

    Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

    How Much Does Costco Gas Cost?

    Costco is not responsible for the actual cost of Kirkland Signature Gas.

    Costco has the ability to maintain low prices, regardless of fluctuating gas prices.

    A 2018 Costco report found that gas is on average 21 cents cheaper than the competition.

    Other platforms have reported that the price difference is closer to around 10 or 15 cents. Either way, the price per fill-up adds up and can amount to some impressive savings.

    Why are Costco Gas Prices so Low?

    Costco can keep gas prices so impressively low because it charges those who use it a membership fee. Costco Kirkland Signature gas can only be purchased by Costco members.

    A personal membership is between $60-60 per year. It all depends on the benefits that you desire.

    Costco accounts for 75% to 75% in profits from its membership. Costco is able to keep grocery prices as low as possible by keeping the price of gasoline and groceries at a reasonable level.

    You won’t make it worth the expense of the membership if your car isn’t filled up with Costco products.

    Apparently, to make up the cost of the membership, you would have to refuel at Costco around 35 or more times a year, assuming you only use your Costco membership to access fuel.

  • Costco Gas Vs Shell, Mobil, Texaco, Chevron, & Exxon
  • Reddit user threads have shown that Costco’s gas is essentially of the same quality or higher than many other gas companies including Shell, Mobil. Texaco. Chevron.

    Reddit users are also claiming that Costco is the one who buys its gas from these refineries. Kirkland then names it.

    Costco gas differs from Shell in that Costco can add fuel additives directly on-site (to make money) rather than using the refined fuel rack.

    Costco’s gas meets all the US government additive requirements, including those for Mobil, Texaco and Shell.

    Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

    Costco Gas Uses Ethanol

    According to online reports, Costco 91 unleaded gas does not have ethanol as it is a “Top Tier” gasoline.

    Costco’s Kirkland Signature gasoline contains 10% of ethanol as per The Energy Independence.

    Costco Gas also offers the option to add fuel at all pump locations.

    Is Costco Gas Bad For Your Car?

  • Costco gas definitely does not ruin your car!
  • In fact, Kirkland Signature gasoline contains high quantities of detergent additives, which help to improve the quality of the gas in your car as well as the cleanliness of the engine.

    You can classify it as Top Tier gasoline.

    And Costco’s gasoline brand is above the US Environmental Protection Agency’s minimal additive requirements.

    AAA investigated the difference in so-called Top Tier gas from gas that met only the minimum requirements of the government.

    The researchers also discovered that Top Tier fuel produced 19 times more intake valve deposits than engines running on regular gasoline.

    Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

    Costco’s regular gas is as good or better than its premium gasoline?

    Costco has both premium Kirkland Signature gasoline and regular Kirkland Signature gasoline so that you can fill up your car with excellent fuel.

    Costco stations carry a higher level of detergent additives in their fuel.

    Costco’s regular gasoline and the premium fuel are both up to Top Tier standards.

    Other than that, there is no difference in octane between regular Kirkland Signature and premium Kirkland gas.

    You should always refuel using the correct octane levels according to your vehicle’s owners manual.

    What Other Gas Stations Offer “Top Tier” Gas?

    Costco may not be the only American gas station to sell Top Tier fuel.

    This refers to fuel that is of a higher standard than the US government’s minimum requirements for fuel quality.

    For a better understanding of their stringent specifications, visit the Top Tier Gas website.

    As of January 2020, Top Tier Fuel is sold at some gas stations by several retail brands:

  • 76
  • ARCO
  • BP
  • Chevron
  • Esso
  • Mobil
  • Shell
  • Texaco
  • WOW
  • Local convenience stores may sell Top Tier fuel. You can also purchase high-quality certified fuel at many other locations, including Costco.

    Costco will likely have significantly higher prices for gallons, however.

    Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

    Is Costco Gas Popular?

    Costco gasoline is very well-known. It’s easy to understand why. Costco Kirkland Signature Gas is not only high-quality, but is also often the most economical option.

    But, it is also its biggest disadvantage.

  • Costco gas will not be available for purchase. This means that you may need to queue up to get your fuel. The lines at Costco’s gas stations are long. There are times when you might wait as long as an hour.
  • While you are waiting, your friend could drive the Costco driver to the warehouse and assist you with any shopping needs.

  • Costco Gas is available for purchase. Please see the Costco Cash Card posts to learn if Costco gas accepts credit cards, and what Costco Gas hours are.
  • Conclusion
  • Kirkland Signature gasoline, which is sold at Costco gas stations, offers great quality and great value.

    The high quantities of detergent additives in both Costco’s premium and regular gas means it meets strict Top Tier performance standards.

    It still costs several cents less per gallon than its nearest competitors.

    Costco gas is expensive and can lead to long waits at gas stations.

    The advantages far outweigh their drawbacks.

    .Is Costco Gas Good In 2022? (Top Tier, Who Makes It + More)

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