Busy location! But a convenient location on my way to and fro surrounding cities. I recommend for the convenience and restaurants nearby. The sandwich and pho place across the street is a great place! A busy gas station for sure, but worth the wait for the affordable gas and quality. Just be sure you don't set your expectations too high for a short wait time. read more

Costco employees go the extra mile. Pulled up to get gas and they were cleaning/sterilizing the handles. By the time I got my camera out they had gone in their offices. Kudos to Costco at this time period of the coronavirus. read more

I gave up putting gas at this location. It is chaotic. The saving isn't worth the wait. As with the Cypress location, this place needs to install more gas pumps. read more

This place is always a mess, long lines, too many people trying to get gas and not paying attention to how their lines are effecting traffic flow in and out of the parking lot and even onto Harbor Blvd. I shop at this Costco but I never get gas here, the money you save is spent wasting time in line and in frustration of other clueless drivers looking to save a dollar... read more

Be prepared to wait 30 minutes to fill up gas on any given day evening time. the longest wait time ever in any OC Costco gas location

Worst Costco gas line out of all the Costco's I've been to but I keep coming back! Please consider another row of pumps into your budget. Would help tremendously. read more

Worst Costco gas station ever. Pump kept stopping so I tried to just hold it myself, nope, it kept stopping, worst part is that I didn't fill my tank because I didn't know if it was truly done. And no Costco employee to ask for help. Bookmark removed! read more

Great gas prices! If you come in early in the morning you will avoid those long lines.

Love Costco. Hate Costco. What can I say its a love and hate relationship. More love than hate. Has the best return policy. Has great products. Has great samples. Hate the parking. Still love costco. Damn. read more

Clean gas station with long hoses and wide passing lanes. The biggest issue this Costco gas station has are the people who refuse to navigate around a car still filling to the forward pump. I'm not talking about navigating around a person who is obviously finished. If people did that, the wait-time would be significantly shorter. The passing lanes are huge and there is no need for tandem enter/exit. read more

I am having to update my review for this particular Costco gas station as they have the cheapest gas any where. The gas here is usually 10 to 20 cents cheaper than other locations and up to 50 cents cheaper than regular service stations. sure the lines can be horrendous, but it's the same story at any Costco you go to. The lines are virtually nonexistent if you come early in the morning when they open. read more

I love the extremely long lines here. It gives me a chance to catch up on emails, text messages, clean the inside of my car, clean the outside of my car, do much needed repairs to the car, and burn away the potential savings reflected in the cheaper prices. Love it !!!! read more

On a Friday at 6pm, there were no lines with only a few cars pumping gas. I was surprised how empty it was. Using the GasBuddy app, I found that this is one of the cheaper Costco gas Stations. Gas in Fullerton is relatively cheaper, with maybe only South Central beating the prices in the LA/OC area. read more

This was m-y first time fueling at this gas station. Long lines. I had to wait about 10 minutes until it was my turn, but worth the wait because it is cheaper than other gas stations nearby. What surprises me are the people who leave their cars running while they wait. What a waste of gas! I have read articles and they recommend you shut off your car if you run idle for more than a minute to save gas. read more

The ONLY place I get gas. Love the fact that the prices are always 10-20 cents less than other gas stations. The wait is a little crazy. So it's always best to go when you're not in a hurry. read more

This particular COSTCO was clocked at $12K/hour in gasoline sales. You pretty much always need to be prepared to wait 10 - 15 minutes to get to the pump. You could gas up from either side of the aisle, as the hoses are lengthy. It doesn't get any cleaner!!! read more

I fuel every day because I'm a Lyft Driver and I can said is the best staff working there and the lines are moving fast because them.

Just like many others, this is my favorite go to place for the Gasoline as their prices are almost always lowest. The bad thing is their lines are almost always highest. Sometimes I go there towards their closing times of 9:30 PM but that's when they have already started closing down the pumping stations but still the lines are much shorter. Hope they can stay open till later to decrease the wait times. read more

We all need gas... We all need money... Most of us don't have a lot of money, so why not save as much as possible. Do it with Costco Gas. It's always super cheap and generally at least 10cents cheaper per gallon compared to gas stations around. Even if it isn't you will still be paying one of the lowest prices for good gas. Sure there aren't tons of pumps and it has an awkward drive up system, and well yea they don't take cash or credit (excluding Amex) but really its worth it. Unless you are in a rush or don't like saving money. read more

I love coming here to have 10 to 20 cents but the lines can get ridiculous at times so I try to go early in the morning or late a night before the pumps close. Great prices for Top Tier gas. They also have long hoses so you can pump on the left or right side regardless of which side your tank is. read more

I prefer to come at 5 or 6 am when there are hardly any cars and no pressure if you need to clean out your car. During the busy times the lines can lead out into the street. "The pressure" read more

The gas here is always cheaper than any other gas station in the area! Yes, there's a wait and there's always a longer wait when the gas is exceptionally low but it can go quickly, don't let the long lines deter you, if you have a Costco card then you should get your gas here and they only accept debit. read more

New pumps are ok, clean lanes, best time to fill its around 7:00pm, but there is a few nozzles that keep popping off with no reason.

Cheapest gas in the area. Just don't go when you're in a rush or in a bad mood, or you'll find yourself cursing at the lines.

While I agree there are times the lines are long, I still give 5 stars! Come on guys, this is quality gas at the best prices around! Of course there will be lines during peak hours. Add to that the 3% cash rebate and nothing speaks better to people looking for quality at great value! read more

Beat gas, prices, and service in this or most any surrounding. The always have someone supervising the pumps ready to help. Com early or late to avoid the lines that plague this location then grab a snack at the food court. read more

This Costco gas station is always packed. But the staff is very friendly and helpful.

Really helpful staff, Bryan was very attentive and assisted me in making sure I got $45 exactly on my fill up! Amazing service from this Costco gas! 11/10 would recommend going to fill up here! read more

This isn't Nevada where you can be the only one (as I was) at the Carson City Costco gas station. And yes, gas anywhere is cheaper in NV (I always gas up on the border before coming into CA). Fullerton is a busy college town, and I am grateful that this Costco has a gas station. The young men and women who are there to assist are always friendly, and guess what....they actually assist those who need it. Thank you all! read more

You always get good friendly service at ANY Costco Gas Station. The price is always right and the gas is the best on the market. The attendants are always checking out the area whereas if you go to Sam's Club for gas, the attendant is usually hiding in the little office watching TV or laying around. I bet Costco does 4 times the business that Sam's Club does. Walk up Sam's Club. Steve White, Lake Mathews, California read more

Always go here because its the nearest gas station with the best prices. Lines are long throughout the day, you may get a lucky but be prepared to wait an average 4-6 cars deep. Best times are to go in the morning, I usually fill up and get out quick. read more

Only the long line bothers me a lot . The guy who works there is very helpful and the prices are cheaper .

Cheaper gas then anywhere else. You just have to wait in long lines, only downfall but you can't beat the price.

Best Gas Price In TOWN! No doubt! This place gets super duper crowded on the weekends! I think the best time to get the gas is weekdays early morning like 8AM! Even though the line might get really long - it's the best place to get the gas! Nowhere else can't beat the price! :)) read more

I love Costco!! I love Costco Gas!!! UNTIL YOU TOOK AWAY ALL THE GARBAGE CANS!!! Mind you, I have children, and the car is full of garbage ALWAYS!! And you took away all the garbage cans!! Everytime I come here, people are wandering around looking for garbage cans... Return the Garbage cans then I shall give you FIVE stars. Thank You! read more

Yes the lines are long, but with the price of gas it is worth the wait. Some of the employees could be better about offering to help us old ladies with handicapped placards on our car. that would probably make the line move a bit faster. read more

Cheap gas is the reason I go here. Please extent the hours of operation. Always need to wait. If u could increase the no of pumps. This gas station will be more awesome read more