How Much is Gas At Costco? The Benefits of Buying Gasoline at Costco

Cheap costco gas

If you haven’t come across Costco yet, let me introduce you to one of the largest retailers in the US. They are known for providing high-quality products at really low prices. But did you know they also offer something for drivers? That’s right, Costco provides gasoline too. Now, you might be wondering just how cheap their gas prices are, considering their reputation for affordability.

Let me tell you, Costco offers some of the most affordable gas prices you’ll find. With recent global issues and the impact of the pandemic, gas prices have risen. The sluggish economy has led to decreased fuel consumption. If you’re searching for a great deal to fill up your vehicle without breaking the bank, Costco is the place to go.

The Benefits of Buying Gasoline at Costco

It’s no surprise to see long lines at Costco gas stations throughout the day and night, as people flock to fill up their tanks. Waiting in line can be frustrating, as nobody wants to spend precious time waiting for gas. Many of you may wonder how Costco manages to offer such low prices for their gas. Does the low price affect the quality of the gas? Can using Costco gas harm your engine?

In this article, we’ll explore Costco’s gas stations and the gasoline they offer. We’ll also delve into the overall quality of gasoline in the US and provide tips on what to consider when filling up your car or truck. Additionally, we’ll discuss whether Costco’s membership is worth it compared to other gas stations.


Now, here’s the catch: Costco’s gas is exclusively available to its members. To enjoy the benefits of their affordable gas prices, you’ll need to become one of the 87+ million subscribers to their membership program.

Gasoline is just one of the many perks that Costco offers to its subscribers. In addition to affordable fuel, Costco provides free delivery, discounts on groceries, pharmaceuticals, and more.

Costco Gas Prices: How Much Does It Cost?

However, there is a membership fee that you need to pay annually to access these services. The base plan costs $60 per year, while the Costco Executive plan is priced at $120 annually.

If you frequently shop at Costco, the membership fee can eventually be worthwhile. Costco offers numerous freebies and discounted services, including gas.

In the following sections, we’ll delve deeper into Costco’s gas prices compared to other gas stations, such as Mobil. We’ll also address the myth of Top Tier gas and calculate how much gas you would need to purchase to make your membership fee worth it.


Many people are curious about whether Costco gas is truly cheaper. The answer is, it depends. Gas prices fluctuate in the global market, so they can vary and occasionally increase (unless you’re comparing diesel prices to regular gasoline).

The significant difference between Costco and other gas stations is that Costco’s gas tends to be cheaper. Typically, it costs around 60 cents less per gallon compared to a regular Mobil gas station. While this may seem like a small amount, it can accumulate into significant savings when filling up your entire tank.

However, it’s important to consider the annual membership subscription fee. If you’re not a regular Costco shopper, you might be wondering if the cost is worth it.


Many individuals who aren’t regular Costco shoppers are wondering about the cost of gas at Costco. To be honest, obtaining a yearly subscription is not cheap. Ultimately, if the subscription doesn’t provide enough savings, you may end up losing money.

As a result, many people have conducted tests and shared testimonials regarding Costco’s gas prices. One reader has even done some simple calculations on a monthly basis.

For instance, a gallon of gas at Costco is approximately $3.29, while at a Mobil gas station, it costs around $3.99 in cash or $4.19 if paying with a credit/debit card.

Now, let’s consider a scenario where you own a car with a 12-gallon fuel tank and you fill it up three times a month. Here’s the breakdown: the first example is with a Costco membership, and the second example is at a regular Mobil gas station.


It’s crucial to consider the busyness of Costco gas stations. These locations often have long lines, especially during peak hours. To save time and avoid frustration, it’s best to avoid these busy periods.

Additionally, think about the distance you’ll need to travel to reach a Costco gas station. They might not be conveniently located near your home, which means you’ll have to factor in extra time and expenses for commuting.

As a result, you may end up making more frequent trips to the Costco gas station, leading to higher spending. Remember, the goal of seeking cheap gas is to save money, as we’ll discuss in more detail later in this article.

If you live nearby a Costco or frequently shop there, it’s an easy decision to fill up your tank at their gas station. However, if you live far away, it’s worth considering these factors before committing to a Costco membership. It’s important to manage your finances wisely and avoid unnecessary expenses.

For comparison, you can also refer to a live, real-time widget that displays the average gas prices across the US. This can help you gauge the cost differences between different gas stations nationwide.


Yes, a membership is required to access Costco gas. Without a membership, you won’t be able to fill up your tank at their gas stations. Costco has a system in place to identify if you’re a member or not when you use the Costco shop card or your credit card for payment. Only subscribers are allowed to purchase fuel.

Now, let’s dive deeper into whether a Costco membership is worth it for their gas prices. We’ll also explore how much gas costs at Costco with a more detailed breakdown and analysis:


Costco offers some of the lowest gas prices in the market, thanks to their loyal customers. To enjoy these discounted prices, you need to show your loyalty by getting a one-year subscription to Costco. This subscription grants you access to various services at discounted rates, including cheap gasoline, as mentioned earlier.

Costco has implemented a clever business strategy by offering affordable gas prices. This decision was driven by the increasing number of customers visiting their stores. With more people coming in and out of Costco every day, the company can generate higher profits. Having a gas station located near a Costco store is an effective way to attract more people to join their subscription program. This is a similar approach taken by BJ’s, who also set up gas stations alongside their wholesale retail outlets.

Many people visit Costco stores to purchase a wide range of products, which brings profit to the company. However, gasoline is a different story. The gas station primarily serves as a means to attract more customers who are seeking cheap gas prices.

This concept is similar to the placement of their famous rotisserie chicken and pizza, which are located at the back of the store. As you navigate through the store and fill your shopping cart, you cover the costs that Costco incurs when offering these products at a low price.

This simple yet smart business strategy benefits both Costco and its customers. It’s a win-win situation where both parties gain advantages from the arrangement.


Costco provides three fuel options for customers to choose from. They offer regular gas with a lower octane rating, premium gas with a higher octane rating, and diesel fuel for cars and trucks. It’s important to note that not all cars can use premium gas, even if they originally run on lower octane fuel. So, be cautious about whether your car is compatible with premium gas or not.

The regular gas available at Costco has an octane rating of 89, which is the standard across the entire US. On the other hand, the premium gas has an octane rating of 91, and it comes at a higher price compared to regular gas. Keep this in mind when considering whether to mix E85 with regular gas.

When you visit Costco’s gas pumps, you’ll see a warning sign that states “members only.” This means that only Costco members are allowed to purchase gas from their gas stations.

It’s worth noting that the three types of gas offered by Costco are the most commonly found across the US. However, it’s unfortunate that Costco doesn’t provide other fuel options. If your car requires a different type of fuel, it’s recommended to find a gas station that offers those specific types.

Using fuel with a low octane rating can lead to engine knocking, a common issue observed in cars that run on fuel with low octane ratings. This engine knock can be diagnosed with error code P0332.

While some places may offer 85 octane gas, it’s important to understand that using this fuel for extended periods can be harmful to your engine’s health. It can result in a permanent knock, accompanied by knocking sounds from under the car during acceleration. Additionally, it can cause premature wear and tear on the engine. To ensure the safety and longevity of your engine, it’s advisable to use gas with a higher octane rating.


Costco, a trusted wholesale brand, prioritizes its customers, and their affordable gas prices are a testament to that commitment. Rest assured, Costco’s gas meets all the required standards set by the law and is on par with any other gas station in terms of quality.

We explored the cost of gas at Costco and discovered that it’s significantly cheaper compared to other stations. The money you save on fuel easily makes up for the cost of the yearly membership, so there’s no need to worry about that aspect.

In addition, we discussed octane ratings and their significance in choosing the right gas for your vehicle. We also highlighted Costco’s exceptional safety record at their gas stations, ensuring they comply with all the necessary standards.

However, it’s important to note that you should also play your part in adhering to regulations for a safe experience. Remember to always turn off your engine at the gas station and refrain from smoking or using lighters while refueling. Stay safe on the road and drive responsibly.

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