I have shopped at the nearby Costco Warehouse in the same parking lot for years; however, this was my first time visiting the gas pumps. I had avoided getting gas at this station because the lines are always very long, just like at all Costco gas stations. On this day, surprisingly, all the waiting lines of cars were only two to three cars deep. I waited just four minutes before it was my turn to fill my truck with gas. The whole process was simple: I used my phone to scan my digital membership card and tapped to pay. It was very smooth and quick. A Costco employee came by to say hello. After telling him that this was my first time using these gas pumps, he asked if I had any questions, and I replied, "No, but thank you." He was very friendly, which I appreciated. Gas prices were much lower than what I had been paying at other gas stations, which really made me happy. read more

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Another quick and painless fill up at Just the San Dimas Costco g) and it was quick and painless despite the usual lines. Prices are consistently among the best in the area (regular around $2.74 recently), the pumps are well-maintained, and the attendants are friendly and helpful. Perfect for Costco members looking to save on fuel. Highly recommend going early or during off-peak hours to beat the crowd. Worth the membership just for the gas! read more

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The gas station is open til 9:30 p.m., Monday through Friday (close at 7:30 on weekends). These late hours surprised me, I thought the gas station closed when the Costco wholesale warehouse closed (8:30 pm Monday-Friday). Most people don't know this because the lines are sooooo short after 8pm. There are 4 gas "islands" with pumps on both sides, for a total of 8 lines. The secret is out, this is the best time to fill up your tank at great prices. Tell a friend!! Sincerely, Rosemary read more

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Costco gasoline at 520 N. Lone Hill Ave. Attention: get that Costco membership.! it is so worth it. I'm busy days. This is a quick way to get gasoline at a great price give or take. There are a few lines but you're never in line more than five minutes. The staff that runs the Costco gasoline on Lonehill And San Dimas are efficient and friendly. This is our go to when we are going on a trip or just driving around town. Costco gasoline gets my five star Yelp review in our personal recommendation.! Filler up!!! read more

445 pm, Saturday, November 15, 2025 Wow! It's so empty! Usually it's so busy. It's been raining so even better that I was able to get to a gas pump immediately. $4.19 for regular unleaded gasoline, 87 octane, top tier. That's a great price for top tier. Only Arco is it's competitor on price and quality of fuel. Sam's Club is the same price but it's not top tier gasoline. read more

Cómo le encanta la gasolina (Dame más gasolina)... The struggle to get affordable gasolina is real. This location has the lowest Costco gas prices in the area. Entrance off Gladstone Street. You cab also enter from the parking lot but you have to make a left which is a pain when it's busy. Wish they had the open pump sensors. Being bougie I know. 5/5 Service Staff is very helpful. From closing gas caps to pumping gas for those you need a hand. Saw both of this happen in one trip. So when your ride needs some gasolina head to this Costco location. God bless read more

Costco Gasoline - Gas prices 8/4/25 - Gas Stations Near Me - San Dimas, California

This place is always busy, the lines are quick depending times you arrive. The attendants are always friendly and helpful. read more

Costco Gasoline - Costco gas - Gas Stations Near Me - San Dimas, California

Line moved pretty quickly on a Tuesday night around 8pm. Gas was just under $3.90 a gallon. Great value! I was surprised that the gas station was a bit further away from the main warehouse. read more

Costco Gasoline - Gas Stations Near Me - San Dimas, California

Too bad I don't remember the name of the friendly and welcoming staff who assisted me early first week of January this year. I had asked for his help with pumping the gas since my hands were very painful. He was kind and warm, and he gladly pumped the gas for me. Whoever he was, that employee really added great value to this Costco gas station - his kind and nonjudgmental service, and his willingness to help me. read more

I always come here and although my home location is manhattan beach (which I love) I had to admit this location is so speedy as long as you come after 6 pm! Usually during traffic time like 3-6 pm it's alot longer but people are usually good, 5 mins tops? I also love the employees that get stationed here they are always very good looking and polite! Always asking how I am, saying yellow and if I need help! Anyways this is my new location and I am digging it! Just gotta come in the mornings and late evenings and you are good! Can't beat the prices! read more

Costco Gasoline in Glendora is always a bit of a scene. The lot is crowded, people are jockeying for lanes, and it can feel a little chaotic at first glance. But the line usually moves faster than expected, and the savings are hard to beat. There are no attendants directing traffic, so you are on your own, but once you get the rhythm, it is pretty manageable. Just bring a little patience and maybe a podcast, and you will be out of there before you know it. read more

Costco Gasoline - Gas Stations Near Me - San Dimas, California

I usually come here after work around 5 to 6 PM on a weekday. The line here is not as bad as Ontario location. I could get in and out faster than some other locations. One negative that I have to say is, sometimes it can be difficult to scan my Costco card on the app. The scanner just doesn't really recognize the barcode. read more

Lines are long but goes by quickly. Price is definitely less expensive than back home by about 50 cents per gallon. Win-win for our roadtrip home! read more

Stopped for gas in the morning before work and car locked keys behind me. Tim working there helped get in with a hanger they had and saved me a service call to a roadside lock smith. read more

Lowest Costco gas prices in SoCal region. I travel from central coast to Temecula weekly and this is my gas stop in SoCal.

The lines here always move smoothly. If your coming in from Gladstone there are two lanes, one for Costco gas and the other lane for the shopping center. Prices are always a bit lower than other gas stations. Pays to be a member. read more

Costco Gasoline - 87 unleaded. 3/24/22 - Gas Stations Near Me - San Dimas, California

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The gas station workers need to help more at the gas station guiding cars as they come in. They should not wait for cars to pile up and cause a traffic jam on the street. read more

The most compact yet convenient Costco gas location ever, I was just right across the street getting my coffee at Panera then boom, I saw this, wow might as well fill up my tank, my two go to places are Costco gas and Panera and if they were right next to each other, it would just be the perfect of both worlds. Although the set up was a bit smaller, and I am sure it would get super busy to get in, but for a Sunday morning, it was easy to crossover and yes gas price is so cheap here, where I live and most locations it would be $4.99 something, here's $3.79 whaaa. No wonder people come here non stop. read more

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Places really great and fast. only thing I'm really concerned is that why can't people just be patient when people finish and they go around and cause slow downs and traffic. read more

Costco gas always below the normal like shell or others. Most people here are patient and courteous. The people who work here are always helpful. The direct the traffic and keep things moving. Seems like always a line but moves pretty fast average wait even when in the street is 20 minutes. Be kind and patient read more

Costco Gasoline - $5.299 - Gas Stations Near Me - San Dimas, California

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Used to be that you saved enough here to cover your membership over the year. That would be $.10 or $.15 per gallon. In the first half of 2024, that gap has gone up to $.40 or $.50. Thats like $5 per fill up for me. I can't imagine any good reason not to be a Costco member at this point. read more

Never had problems at this station. Long lines but fast. Prices are also dropping fast! read more

Costco Gasoline - Gasoline station - Gas Stations Near Me - San Dimas, California

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This Costco Gas Station has 8 lines with 2 pumps per line. The flow of this gas station is good. You can enter from both sides, but it's always better to enter from Gladstone Street because you'll then turn right to the gas pumps. On 3/23/2020, the gas price for 87 grade was $2.659/gallon! During this time of Covid-19, the gas lines were much shorter than normal. It usually takes less than 10 minutes to get gas and leave from this gas station. Thanks Costco for the convenience and always great prices. The only thing that could make this gas station better is if they added 3 pumps per line like many of the other Costco gas stations these days. Xie Xie! read more

Only two pumps at every station this is ridiculous. Lines are superlong, and is there just a lot of idiotic people that can't operate a pump here. Recently passed by here and pump gas here, I noticed that there's only two stations per row, whereas most other Costco gas stations have three stations per roll. In addition to that some of these people are so stupid they don't even know how to insert a credit card into the machine. And they fidget with the machine for a good five minutes before they can even start to pump. Holy cow! Idiot galore, avoid here if you don't want to be dealing with idiots. read more

I go early in the morning to get gas and I always get in and out quick. Right when they open its the cheapest price around also the Costco in Rancho Cucamonga. read more

This is my go-to Costco Gas in Glendora when I'm returning from the San Gabriel Valley area after my food runs LOL. As I said in my other Costco Gas reviews, Costco has the lowest gas prices compared to other gas stations except for Pilot Gas prices that is actually quite comparable with Costco prices. This one doesn't have a car wash either. Lines are always long here... it wraps all the way around to the other end of the parking lot... this could cause some congestion for the other businesses that are along the same side, but what can they do... who knew Costco Gas was going to be so HOT! I've seen some larger Costco Gas in other cities mainly in Northern CA... probably they are the ones that are newly built especially now that Costco knows their gas is a hot commodity. They should know better to have more gas pumps than not. Happy Gas Pump'ing! read more

Still the best gas prices in town. This location gets extremely busy but I was lucky that there was barely a line at the pumps so I'm a happy camper. $4.04/gallon for regular unleaded - what a deal read more

I will always recommend this COSTCO gasoline in San Dimas. It is always clean and not crowded with a whole bunch of cars. Less yelling Chinese language. read more

Costco Gasoline - Gas Stations Near Me - San Dimas, California

R u kidding? With prices like this no wonder it put the chevron across the street out of business. No frills gas station; gas and go. No windshield cleaners, air or water pumping devices, and no paper towels. Except I'm cool with it. For the price difference and the awesomeness of the quickly moving lines, I'm good. Not Arco gas here. This is true value. read more

My car was low on gas but I knew I had just enough to make it to Krispy Kreme from home. I was going to stop by Costco near home to put a full tank but was I lucky? After exiting from Krispy Kreme drive-thru, Costco Gasoline was right in front of me with no wait at all! Got to the pump right away and was able to fill a tank in no time. It was $2.49 for 91 which is pretty cheap compared to other competitors. I spent about $35 for a full tank in my bimmer. Love that gas is cheap these days but at the same time, not loving the restrictions. Anyway, I was just so happy to see Costco Gasoline right when I needed it and it saved me so much time not having to drive to the one near home with no wait at this location. read more

They have good service and great prices here at Costco gas, but is almost not worth it due to the wait times in the jam packed lines.

This Costco Gas location is probably one of the worst I've been to. For a first time visitor, there's no real direction or indicator of which side to enter from. In addition, the lines for each side are very ambiguous and there are people dashing across the station from one gas pump line to another... read more

Came in today around 1 PM to get gas. Lines were quite long to the street but the staff was super helpful and getting the cars into the slots as quickly as possible. Always love returning to Costco for a reliable and affordable gas. read more

I love the way customer service to get gas Very well organized .a lot of line to get into Very helpful read more

Hi, Ok, so I am sure everyone is wondering how on earth you can give four stars to a gas station? Well, all I can say is go there and you will know why. First, this place is always spotless. Spills, they cleaned up immediately. Everything is always repaired at once, you never see a broken pump. It is very will lit, has an available and visible attendant, and you never have to worry about your safety here. They check local prices every day and are always the cheapest in the area. They just finished an upgrade to the station. The upgrade allowed them to add "top tier" additives to the gas - with 5 times the required additives required by law. Did I mention they are always the cheapest in the area? :-) Now the drawbacks.... Because it is Costco, you must be a member to by gas here. You cannot pay with cash, even if you want to.They only take a debit card or American Express. Because of the prices, there are sometimes lines that lead all the way to the end of the driveway. They unfortunately have no air compressor (you have to go to the tire center if you need air in your tires. They also have nothing available so you can clean your windows. Basically, I buy all my gas at Costco. Quality gas at the cheapest prices in the area! I am easily a fan, Jim read more

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This is no doubt the ideal spot for filling up one's automobile with cheaply priced gas. Costco's gas exceeds any 'chain' or franchise gas station in my opinion. Always cheaply priced for high quality gas, which despite having long lines, regularly filter in and out quite quick! Overall, a great gasoline company that makes having a Costco membership worth it. read more

Gas her up please! Oh wait, this is self service, huh? Usually the lines for a CostCo station is pretty long, but I landed here around 4:30 on a Wednesday. The lines weren't horrible at all. I think I'm catching the lul before everyone gets outta work. Thankfully, it's conveniently located off the 57 and 210 freeways. But the exits from either of the freeways is a bit of a windy road. You'll have to take a few turns here and there off the freeway to get here. There's plenty of pumps here, but probably an average number of pumps for a CostCo. I've seen other stations with 3 pumps in each aisle. read more

Yes it's CostCo gas and if you go at the correct time you can be in and out in no time. The gas is reasonable and it's the best bang for your buck. I am happy with the service and attendants. It's helps when they have people directing traffic . read more

En route to work in the morning at most I've had to wait for one cycle. Every once in a while the gas station is closed for service but they do post notices ahead of time. My car battery died for the first time ever, apparently Goodyear doesn't even make batteries anymore? and Costco staff helped me try to jump and pushed my car to a safe out of the way spot along with some kind passers by. Appreciate the community spirit of this location, thank you! read more

Costco Gasoline - No Wait - Gas Stations Near Me - San Dimas, California

Location is convenient to 210 & 57. Line is normal as compared to other Costcos and Sams. Prices always lower than "regular" fuel stations. No complaints. Happy. Simple. read more

Costco Gasoline - Always a line, but worth it. - Gas Stations Near Me - San Dimas, California