Cheapest Gas in Renton, WA
Updated April 5, 2026 — Prices updated regularly from EIA data
$3.82
Lowest price at Costco in Renton
Finding Cheap Gas in Renton
The cheapest gas in Renton right now comes from warehouse clubs and high-volume discount stations. With prices as low as $$3.82 versus a metro average of $$3.97, smart shoppers find real savings consistently.
Maximum Savings in Renton
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in Renton
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $3.82 | $0.25 |
| #2 | Speedway | $3.94 | $0.13 |
| #3 | Circle K | $3.95 | $0.12 |
| #4 | Sunoco | $3.98 | $0.09 |
| #5 | Marathon | $3.99 | $0.08 |
| #6 | BP | $4.01 | $0.06 |
| #7 | Mobil | $4.02 | $0.05 |
| #8 | Exxon | $4.03 | $0.04 |
| #9 | Shell | $4.05 | $0.02 |
| #10 | Chevron | $4.07 | $0.00 |
Gas Saving Tips for Renton Drivers
- Accelerate and brake gradually. Aggressive driving can reduce fuel economy by 15-40%, directly increasing how often you fill up.
- Track weekly price cycles in your city — most markets follow predictable weekly patterns. Identifying yours and filling on low-price days saves 5-15 cents per gallon consistently.
- Fill up before holiday weekends. Memorial Day, Fourth of July, and Labor Day consistently see 10-25 cent price spikes as demand surges. Topping off Thursday before a holiday weekend beats the rush.
- 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.
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