The Real Cost
Week of May 18, 2026 · Seattle, WA
2026 Mazda CX-90 4WD
24 gal tank · 25 MPG
$134.18 to fill the tank
At $5.59/gal, this tank gets you about 600 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $134.18
- 600 miles per tank
- $/gallon
- $5.59
- EIA WA state weekly
- Monthly (12k mi/yr)
- $223.64
- 40.0 gallons
- Annual (12k mi/yr)
- $2684
- 480 gallons
The math
Why it costs what it costs.
- Fill cost = 24 gal × $5.59/gal = $134.18
- Miles per tank = 24 × 25 = 600
- Annual (12,000 mi) = 12,000 ÷ 25 × $5.59 = $2684
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