Before purchasing, learn more about Costco’s Kirkland Signature Tequila

Before rushing to Costco to score some discounted tequila, it is crucial to have a clear understanding of what you are purchasing. Costco is currently facing legal action regarding their Kirkland Signature tequila products. The Blanco, Reposado, and Añejo variations of Kirkland Signature tequila have come under scrutiny for allegedly being misrepresented by the retail giant. Instead of pondering whether Costco’s Kirkland Signature Tequila contains any additives, you should be questioning whether it meets the stated 100% blue agave content. The lawsuit asserts that Costco is falsely advertising its tequila as being exclusively made from blue agave when tests have revealed significant amounts of non-agave alcohol within these products. This situation is significant because it suggests that customers may be misled into paying more for a product that is not as high in quality as advertised.
Recent tests conducted on Kirkland Signature Blanco Tequila, labeled as “100% de Agave,” uncovered levels of non-agave alcohol that reached up to 40%. As per Mexican regulations, only Mexico has the authority to produce tequila, with strict guidelines in place for alcohol content. A beverage must contain at least 51% blue agave to be classified as tequila. A concoction that boasts 100% agave content is deemed premium, indicating that it should have a higher retail price than standard “mixto” tequilas.
As of February 2026, the legal case against Costco regarding their Kirkland Signature tequila products is ongoing, and these tequilas are not currently listed on Costco’s website. Customer reviews on online platforms such as Reddit have been mixed even prior to the lawsuit. Some Costco patrons who have previously purchased the tequila expressed varying opinions. One consumer mentioned, “I just purchase it because it is significantly cheaper than branded products and works well in mixed beverages. With sufficient lime juice and agave syrup, little attention is paid to quality,” indicating a practical approach to their purchase. Conversely, another Reddit user stated that they have consistently avoided Kirkland tequilas, believing them to be subpar.
While Costco resolves the Kirkland brand controversy, exploring alternative tequilas at the store is a viable option. Redditors have praised the Gran Centenario Añejo, which retails for less than $30. One user remarked, “This is a top-notch tequila, ideal for margaritas. I also purchase the Kirkland brand, but I find this superior,” highlighting the favorable attributes of this tequila. Another Reddit reviewer praised the Añejo variant, exclaiming, “The Añejo is fantastic! It’s great whether consumed neat or chilled,” underlining the positive reception of this product. Alternatively, seeking out other lesser-known tequila brands may also be worthwhile while awaiting the resolution of the Kirkland brand dispute.