Sung W.
11/29/2025
This Costco gas at ontario business center is my new fave. I've been coming here like every 2 weeks since it opened and it's actually insane how smooth it is. Brand new pumps, spotless so many...
Costco Gas
Open
(11)
$3.72Regular
$4.15Premium
Fuel prices updated 14 hours ago
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3680 E Guasti Rd
Ontario, CA 91761
Costco Gas in Ontario CA offers high-quality fuel at competitive prices making it a popular choice for both Costco members and locals. The station features multiple pumps for quick service and is conveniently located near the Costco warehouse ensuring easy access for customers. With its focus on efficiency and value Costco Gas is an excellent stop for all your fueling needs.
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Reviews
5.011 reviews
Ray N.
11/4/2025
Standard Costco gas station with a couple of things that do stand out: 1) Open till ten o'clock at night Monday to Friday which is huge. 2) 5 pumps in every lane. Love that. 3) 4.09 per gal for...
Tamara T.
12/7/2025
I don't think people realize this gas station exists! Costco Business is on the south east corner of Haven Ave. and Guasti Rd. and about a year later the gas station was built and open. There's 4...
Jennifer W.
5/28/2025
5/28/25 After a grueling shoe shopping trip, needed to fuel up. This is the closest at the time. Plenty of pumps (30 in all) and surprisingly not a line to weave through at 8 pm. Clean,...
Vuoch L.
2/15/2025
Now open!!! Costco Gas sation at the Costco Business Center is now open!!!! Anyone with Costco membership is welcome to use the gas station and shop at the Business Costco Center. Right off...
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