Costco Gas Prices in San Diego, CA

San Diego, California has 4 Costco fuel centers serving members in the area. Across San Diego, regular gas averages $5.699 and premium runs about $0.38 higher at $6.074. That's about $0.01 above the California statewide average of $5.684. Within San Diego, Costco Carmel Mountain posts the lowest regular at $5.699 and SE San Diego the highest at $5.699 — a $0.00 spread worth checking before you fuel up. Across San Diego, regular pump prices have climbed about $0.16 over the past two weeks, from $5.542 two weeks ago. Premium has climbed about $0.11 over the same period. None of the San Diego Costco fuel centers currently sell diesel.