I wish I could give no stars. Absolutely horrible service and the employee who says her name is…read moreOlga calling me a liar. Sad to say you've lost my business. I enjoy this location as it's less crowded. I have my children asleep in my car and appreciate the fact that I do not need to go off my car. Boy was I wrong. Waited 12 - 15 mins today sitting at the car wash bay for someone to come and help me. I do not want to leave my children alone. But I back out of the wash and park up front. As I walk into the store Olga is behind the counter on her cell phone and was startled by my entrance. I ask for help and say I've called the number on Yelp (doesn't work by the way) and have been honking and sitting there with my door open and no one is helping me. Has the nerve to dispute my story and starts calling me a liar when I said I've been here more than 10 minutes and refusing to help me with my car wash!! Completely unprofessional. I asked for a managers name, managers working number or email and she refused to give me any information. I'm just appalled by "service" or lack there of.

Good location! Friendly staff, safe area. Good competitive gas prices and the car wash too and is…read moregood!

Horrible customer service! Went to get gas today and the pump is unusually slow to fill the tank,…read morebut I didn't think otherwise. It took almost 10 minutes to fill the gas tank and after awhile, I start noticing gas coming out of my tank. When I pulled it out, a puddle of gas came out. Then I notice it's like 11.5 gallons on the meter and my car is a small car, the max gallons are probably 11 gallons to fill my car. So basically instead of stopping by itself when the tank is full, it kept filling and eventually spilled out. Complaint to the gas station attendant, said there's nothing that they can do. Didn't even offer to refund the extra gallon money to me. It is very sad as I go to this gas station frequently and it is close to my home. Now I will go somewhere else!

Gas station - pretty busy here, gas is more than what I expected it to be compared to to the other…read moreones around Walnut. But it's easy to get to and hardly ever a line.

I would always come here for gas daily now I'm going to the other gas station across the street ,…read morebecause this worker named Magnolia was being soooo rude , and told me I had to buy something or put gas before I use the restroom . I needed the restroom before I put gas since I was driving from LA to Moreno Valley and this was about the half way point I always stop and put gas now I'm not going to be a customer here anymore I will give my business to the gas station across the street . Don't come here anymore this place has been run down over the years . Hopefully this review gets in a managers hands .

This used to be a decent gas station, but it's gone downhill a bit in recent years. They used to be…read moreone of the first Arco stations to accept credit cards for store purchases and gas, back when the corporation only did debit with fee or cash. They also used to have very competitive prices, only 8c above wholesale, which is below industry average. Their warm food used to be fresh and organized, their cooler well stocked and their restroom free and clean. When they ran out of regular, they would lower the price of premium to regular to keep customers happy until the delivery truck showed up. It used to be a 5-star business 10-20 years ago. Now they have fallen off the wagon a bit. Employee moral seems down and service is lagging a bit. They still have some pluses, but it's a mixed experience now. Sad to see this location decline.

OK service and alright prices on gas at times. Employees are…read moreneither friendly or unfriendly. (Just a body there) inside and outside could use a nice scrub down for sure. Overall if I found myself running low I would still fill up here, but only when running low. This is definitely not my go-to gas station.

NOT 24 hours THAT IS A CLEAR LIE AND NEED TO GET THEIR MANAGEMENT ON THE SANE PAGE…read more Every single night they're are closed due to a "shift change" for 30 minutes or more, and so happens to be every time I try to come in. It took 4-5 times before o posted this but clearly their management is not on the same page. Don't post "open 24 hours" if you're not truly 24 hours. They need to include their shift change. Too many times this has come up where I couldn't get gas, snack, or essentials. I'm over it and management needs to step up.

Filled up gas (price was nothing to write home about) but what really impressed me was the…read more*meticulously* clean restroom. I mean you can tell it was regularly looked after. No issues about using it from staff. A lot of room and somewhat quiet in the back lot to park your car and stretch. I used the area to perform one of my Islamic prayers in private.

Need to try a new spot to wash my car. This will be spot #2. So both washes that I have been to do…read moreabout the same thing. 1: Pay by Machine 2: Drive in and park 3: Drive off in 5 mins + This wash was a little more faster around 4mins and the blower didn't do a great job in wash off the water. The cost to wash was $1 difference. So if you want just to wash your car. That is it. No extra just a wash this the spot. If you want more we'll still looking.

Was staying at a hotel across the street from this Costco gas station, so I was able to take…read moreadvantage of an early morning fill-up before this place got too crazy. Solid spot! Wide lanes makes it easy for big car and small car drivers alike to navigate through. This Costco gas station is also located next to a Costco Business Center (so not your regular type of Costco) - which helps I think with the smaller crowd. There was no wait at the time I stopped by (a little after 7am on a Sunday). Prices as usual is always great - $5.39 for premium at the time of this review. No issues with the pump other than it not reading my mobile app membership QR code, but luckily, I had my backup card with me. The service attendant was present keeping things tidy. As I found out during my recent stay - there's also a Starbucks and yummy poke bowl spot in the same shopping center.

Super huge Costco gas station. Not THE biggest that I've been to, but it's way bigger than a good…read morenumber of them in the 626 and also I love the fact that they have the lights that let you know which pumps are occupied and which ones are free. Wide lanes so that you can navigate around other cars to get to an open spot and even on a Sunday afternoon, there was no line to get gas with so many pumps available. Costco has always been known to have really affordable, cheap, but not watered down gas, so it's a god send for people who are members. I honestly think my only issues were that it didn't take the app version of our membership no matter which pump we tried and we had to talk to a team member to manual activate the pump and get our membership ID number. Also, the Internet connection near every Costco is infamously awful, so there's that too.

FRAUD WARNINGGGGG!!! I stopped once to fuel up before work and have had numerous fraudulent charges…read moreon my card since!! I even locked my card and they still somehow charged it, do NOT STOP AT THIS GAS STATION PUSH YOUR CAR TO THE NEXT ONE IF YOU HAVE TO

Awesome customer service ,guy up front on the register is awesome made my day 100x betterread more

My favorite Arco in this area and here's why:…read more Location This Arco is located off of mission and grove and it's very spacious with lots of gas pumps. Some times it gets a little crowded during peek hours but the low gas prices are worth the wait. Prices I know it's not the best gas to put in your car but when you go on a Ralph Lauren & Versace shopping spree, this place doesn't seem so bad. Gas prices fluctuate with the economy but overall this is one of the Arcos in the area that offers super low rates per gallon. ampm This Arco has an ampm where you can find a rather large selection of snacks and libations. They have some pretty good deals on snacks and drinks here. It's also clean so you don't have to worry about roaches or vermin. Customer Service I've never once been mistreated by any of the employees here (knock on wood). I'm always greeted politely when entering the store and I have no complaints about any of the employees (good management at this place). So if you are ever in need of gas and don't want to spend a lot, stop by this Arco. It has the best prices in town!

I bought a juice that was priced at 2 dollars tell me why she charged me for a Tums bottle instead…read more? So paid 6 dollars for a two dollar juice? She said she can't help it cause ppl switch up placements of products ? Didn't notice till I looked at the receipt