Michael V.
8/29/2025
Costco gas is consistently the cheapest gas around. Top tier fuel at rock bottom price. The only downside is that there are often long lines waiting for your chance to fill up.
Costco Gasoline
Open
(150)
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900 S Harbor Blvd
Fullerton, CA 92832
Costco Gasoline in Fullerton CA offers high-quality fuel at competitive prices for both Costco members and non-members. The station features multiple pumps to ensure quick service and convenience. With its easily accessible location and commitment to customer satisfaction it's a popular choice for drivers in the area looking to fill up efficiently.
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Reviews
3.5150 reviews
Mark L.
7/30/2025
The Wednesday Morning Update. 07/30/25 Sam's Club $3.74 for 87 this morning. Come on costco..05 cents more than Sam's Club. Thank you, Mark LaBray
Conor B.
7/9/2025
They do their best to free up the parking lot from people waiting to get gas. That means you have to enter basically from the back of the Costco and drive down a roped off area to get gas. It...
Nadine C.
5/4/2025
Fueling up in Fullerton, Orange County, California... Costco Gasoline seems to have the best prices everywhere i go. The closest on to me today was this Fullerton location. The lines were long on...
PatrickJ T.
1/25/2025
My first time at this Costco in Fullerton. Needed to fill up my gasoline tank so I headed to their gas station. The parking lot of this Costco is crazy crowded. Be careful when driving around...
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