Costco Gas Station is a membership-based fuel center known for offering Top Tier rated fuel, specifically Kirkland Signature™ Gasoline, which helps keep engines clean and vehicles running well. Customers appreciate the low prices, often 20 to 40 cents cheaper than competitors, making it a preferred choice for many. The gas station can get crowded, especially during lunch and afternoons, with lines that may reach up to 50 cars. However, most customers report efficient movement, especially if they strategically choose pumps based on their vehicle’s fuel tank location. Many feel that the savings on gas quickly justify the cost of membership. While there are suggestions for adding more gas tanks and improving traffic flow, the overall experience remains positive due to the combination of quality fuel and competitive pricing.