Cheapest Gas in Fontana, CA
Updated April 5, 2026 — Prices updated regularly from EIA data
$4.60
Lowest price at Costco in Fontana
Finding Cheap Gas in Fontana
Every cent counts when you're filling up in Fontana. The difference between the cheapest and most expensive stations in town is $$0.25 per gallon today — pure savings just from choosing the right location.
Maximum Savings in Fontana
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in Fontana
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $4.60 | $0.25 |
| #2 | Speedway | $4.72 | $0.13 |
| #3 | Circle K | $4.73 | $0.12 |
| #4 | Sunoco | $4.76 | $0.09 |
| #5 | Marathon | $4.77 | $0.08 |
| #6 | BP | $4.79 | $0.06 |
| #7 | Mobil | $4.80 | $0.05 |
| #8 | Exxon | $4.81 | $0.04 |
| #9 | Shell | $4.83 | $0.02 |
| #10 | Chevron | $4.85 | $0.00 |
Gas Saving Tips for Fontana Drivers
- 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.
- Do not let your tank run below a quarter — low fuel levels increase wear on electric fuel pumps and can lead to emergency fill-ups at inconvenient and expensive stations.
- Check fuel prices across state lines if you regularly travel near a border. State fuel taxes vary by up to 50 cents per gallon — the savings from crossing into a lower-tax state can be dramatic.
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