San Diego is home to five Costco warehouse locations, four of which feature gas stations where members can fill up at some of the lowest fuel prices in Southern California. Whether you're commuting along the I-5, heading to the beach in Pacific Beach, or making a run out to East County, Costco gas stations in San Diego offer significant savings compared to name-brand competitors — often 20 to 40 cents per gallon less than nearby stations.
Costco's fuel stations are open to members only, and the membership pays for itself quickly if you drive regularly. Each location offers top-tier gasoline that meets strict quality standards set by major automakers. If you're curious about what makes Costco fuel different, check out our article on Costco diesel quality. While none of the San Diego city locations currently offer diesel, nearby warehouses in the broader San Diego County and Southern California region do carry it.
Here's a complete list of Costco fuel locations within San Diego city limits, including addresses, phone numbers, and fuel availability.
| Location | Address | Phone | Gas | Diesel |
|---|---|---|---|---|
| Morena | 4605 Morena Blvd San Diego, CA 92117 |
(858) 270-6920 | ✅ Yes | ❌ No |
| Carmel Mountain | 12350 Carmel Mountain Rd San Diego, CA 92128 |
(858) 675-0379 | ✅ Yes | ❌ No |
| SE San Diego | 650 Gateway Center Dr San Diego, CA 92102 |
(619) 358-2303 | ✅ Yes | ❌ No |
| Mission Valley | 2345 Fenton Pkwy San Diego, CA 92108 |
(619) 358-4045 | ✅ Yes | ❌ No |
| San Diego Bus Ctr | 7803 Othello Ave San Diego, CA 92111 |
(858) 810-5835 | ❌ No | ❌ No |
Tip: The Mission Valley and Morena locations tend to be the busiest during lunch hours and after work. If you can fill up before 10 AM or after 7 PM, you'll usually find shorter lines. The Carmel Mountain station in Rancho Peñasquitos is often less congested than the central San Diego locations.
While none of the five Costco locations within San Diego city limits currently offer diesel fuel, diesel-equipped Costco stations do exist in the broader Southern California area. If you drive a diesel vehicle — whether a heavy-duty truck or an RV — use our interactive map to find the nearest Costco diesel pump. You can filter by diesel availability and search by ZIP code to plan your fuel stops efficiently.
For road trippers heading out of San Diego, consider checking our diesel RV road trip guide for tips on planning fuel stops along major routes. And if you're comparing fuel options, our breakdown of Costco diesel vs. Shell diesel can help you decide where to fill up.
🔍 Find Costco Stations on the Map
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