Gas stations

Costco Gasoline

Open by scheduleMonday · 5:30 AM – 10 PM

Rancho Cucamonga Costco

ⓘ Hours as published by the business

11800 4th Street, Rancho Cucamonga
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Opening hours

Monday · Today
5:30 AM – 10 PM
Tuesday
5:30 AM – 10 PM
Wednesday
5:30 AM – 10 PM
Thursday
5:30 AM – 10 PM
Friday
5:30 AM – 10 PM
Saturday
6 AM – 8:30 PM
Sunday
6 AM – 7:30 PM

Holidays and short days are the usual exceptions — call before a long drive.

▤ Contact & details

⌖ Address
11800 4th Street, Rancho Cucamonga 91730
◇ Directions
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◆ Category
Gas stations
◎ Country
US
⌂ Floor
0
◇ Operated by
Costco

Record checked

About this location

A few stories people tell about this place

1. At Costco Gasoline, something strange started happening one morning when the automated announcement came over the PA: ‘Attention, customers! If you see a unicorn filling up your car, it’s not a hallucination—we’ve just hired our first gas station unicorn!’ Word spread quickly through the neighborhood, and soon everyone was stopping by Costco for more than gas—they wanted to catch a glimpse of the magical creature themselves. Even a delivery driver reported seeing the unicorn filling up his truck while on his route. The unicorn became so popular that neighbors began leaving fresh flowers at its stall each morning. Eventually, however, someone asked if they could touch the unicorn—and that’s when management decided it was time to reveal their secret: the unicorn was actually an animatronic model controlled remotely by a regular employee during slow hours.

2. At Costco Gasoline, one day a regular exclaimed, ‘I swear, every time I fill up here, my car starts singing!’ Curious, another customer asked if it was the gas talking. A delivery driver chimed in, saying he heard it too—especially when he filled his truck on Friday afternoons. Before long, everyone in the parking lot was listening for the song. Turns out, it was just the wind rustling through the plastic bags left behind by shoppers, creating an amusing melody as cars pulled away.

3. At Costco Gasoline, one afternoon a regular noticed an unusual item in the parking lot—a mysterious box wrapped in brown paper and tied with string. Nobody claimed it, and no one seemed to know where it came from. The next day, another member of staff found a note inside an identical package: ‘Dear Costco, please accept our humble thanks for excellent service—your gas is so good, we had to send you some extra!’ Turned out, someone was having fun playing pranks on everyone.

4. At Costco Gasoline, one weekend a little boy pointed excitedly and asked his dad, ‘Dad, why does that pump talk?’ His dad smiled and explained gently, ‘Son, it’s not talking; it’s just saying your total so far.’ The little boy nodded thoughtfully, then whispered to himself, ‘Oh, now I get it—like our neighbor’s old car that always tells us when it needs gas!’ Everyone laughed, and the transaction continued with good humor.

Source details

Business attributes

Address

Housenumber
11800
Postcode
91730
Street
4th Street

Contacts

Hours & freshness

Check date
2026-03-22
Opening hours
2026-03-22
Opening hours
Mo-Fr 05:30-22:00, Sa 06:00-20:30, Su 06:00-19:30

Accessibility

Access
customers

Brand & operator

Brand
Costco
Wikidata
Q715583
Operator
Costco

What it offers

Amenity
fuel

Other details

Membership
Yes

Source: OpenStreetMap, 17 recorded details for this place, last confirmed 2026-03-22.

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