Cheapest Gas in San Francisco, CA

Updated May 20, 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.