Mercer Island Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $5.03 | $5.17 | $5.32 | $5.52 | - |
| Month Ago Avg. | $5.03 | $5.17 | $5.32 | $5.52 | - |
Highest Recorded Average Gas Price In Mercer Island Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $5.52 | 10/17/25 |
| Regular | $5.03 | 10/17/25 |
Top 10 Gas Stations & Cheap Fuel Prices in Mercer Island
Shell in Mercer Island (2903 78th Ave SE)
2903 78th Ave SE, Mercer Island, Washington,
$5.24
Oct 23, 2025
3¢ Cashback
Shell in Mercer Island (2903 78th Ave SE)
2903 78th Ave SEMercer IslandWashington98040USA
Find Cheap Gas Prices By State
Click on the state to view the State details
Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.