Cheapest Gas in San Francisco, CA
Updated April 5, 2026 — Prices updated regularly from EIA data
$4.28
Lowest price at Costco in San Francisco
Finding Cheap Gas in San Francisco
Gas price hunting in San Francisco, California rewards the prepared driver. The spread between today's lowest ($$4.28) and highest ($$4.53) local prices is $$0.25 per gallon — a meaningful difference for anyone filling up weekly.
Maximum Savings in San Francisco
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in San Francisco
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $4.28 | $0.25 |
| #2 | Speedway | $4.40 | $0.13 |
| #3 | Circle K | $4.41 | $0.12 |
| #4 | Sunoco | $4.44 | $0.09 |
| #5 | Marathon | $4.45 | $0.08 |
| #6 | BP | $4.47 | $0.06 |
| #7 | Mobil | $4.48 | $0.05 |
| #8 | Exxon | $4.49 | $0.04 |
| #9 | Shell | $4.51 | $0.02 |
| #10 | Chevron | $4.53 | $0.00 |
Gas Saving Tips for San Francisco Drivers
- Download the Upside app for cashback on gas purchases — users report average savings of 20-30 cents per gallon on qualifying transactions.
- Check if your grocery store offers fuel rewards. Kroger, Safeway, Giant, and many regional chains discount gas by 10-50 cents per gallon tied to grocery spending thresholds.
- Use regular unleaded unless your owner's manual specifically requires premium. For the majority of vehicles, there is zero performance benefit from a higher grade.
- Plan fill-ups along your existing commute route rather than making special trips. A station you pass daily that is 10 cents cheaper beats a special detour to a slightly better price.
- Pay cash at stations offering a cash vs. credit discount — typically 5-10 cents per gallon savings that adds up significantly over time.
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