Gas prices · WA
Washington gas prices & trip fuel cost
Our working baseline for Washington is $4.30 per gallon of regular and $4.55 for diesel. Use it to size up a drive, then fine-tune with the exact pump price you see on the day.
Cost to drive 100 miles in Washington
| Vehicle MPG | 100 miles | 250 miles | 500 miles |
|---|---|---|---|
| 18 MPG | $23.89 | $59.72 | $119.44 |
| 22 MPG | $19.55 | $48.86 | $97.73 |
| 25 MPG | $17.20 | $43.00 | $86.00 |
| 30 MPG | $14.33 | $35.83 | $71.67 |
| 35 MPG | $12.29 | $30.71 | $61.43 |
| 45 MPG | $9.56 | $23.89 | $47.78 |
Popular Washington road trips
Fuel figures on this page are modelled estimates built from published EPA combined MPG ratings and curated regional pump-price baselines. They are not live station quotes — always confirm the price at the pump before you travel.