Costco Gas Station is a membership-based fuel center known for offering Top Tier rated Kirkland Signature™ Gasoline, which helps keep engines clean and vehicles running smoothly. It is recognized for having the cheapest fuel prices, making it a popular choice for members. The station can be very busy, especially on weekends, so customers are advised to fill up before shopping at Costco to avoid long waits. While the line moves quickly, some drivers may take longer at the pump, which can be frustrating. Payment is only accepted via debit or credit cards, and using a Costco VISA card can provide additional rebates. Overall, Costco Gas Station provides quality fuel at competitive prices, making it an efficient option for members.