Cheapest Gas in San Diego, CA
Updated April 5, 2026 — Prices updated regularly from EIA data
$4.36
Lowest price at Costco in San Diego
Finding Cheap Gas in San Diego
San Diego's most affordable fuel stations are identified below. At peak savings, San Diego drivers who choose wisely pay $$4.36 per gallon instead of $$4.61 — a difference that compounds quickly for regular commuters.
Maximum Savings in San Diego
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in San Diego
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $4.36 | $0.25 |
| #2 | Speedway | $4.48 | $0.13 |
| #3 | Circle K | $4.49 | $0.12 |
| #4 | Sunoco | $4.52 | $0.09 |
| #5 | Marathon | $4.53 | $0.08 |
| #6 | BP | $4.55 | $0.06 |
| #7 | Mobil | $4.56 | $0.05 |
| #8 | Exxon | $4.57 | $0.04 |
| #9 | Shell | $4.59 | $0.02 |
| #10 | Chevron | $4.61 | $0.00 |
Gas Saving Tips for San Diego Drivers
- Combine errands into single efficient trips rather than making multiple short trips. Cold engines use significantly more fuel — letting the engine warm up across one longer trip is far more efficient.
- Check tire pressure monthly, especially as seasons change — tire pressure drops about 1 PSI for every 10-degree Fahrenheit temperature decrease.
- Fill up on Monday or Tuesday mornings — gas prices typically rise Thursday through Sunday as weekend demand increases, then reset lower early in the week.
- Use the GasBuddy or Waze app to compare prices within 5 miles of your location before every fill-up. Even a 10-cent difference on 15 gallons saves $1.50 each fill-up.
- Join a warehouse club (Costco, Sam's Club, BJ's) — their fuel consistently runs 10-25 cents below local market prices. The membership cost typically pays for itself in fuel savings within the first two months.
Nearby Cities with Cheaper Gas
Save on Gas, Invest in American Legacy
While you track every penny at the pump, own a piece of American history. Limited edition collectibles from our trusted partners.
Claim Yours Now →