The Real Cost
Week of May 18, 2026 · Seattle, WA
2026 Ford Mustang
12 gal tank · 19 MPG
$67.09 to fill the tank
At $5.59/gal, this tank gets you about 228 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $67.09
- 228 miles per tank
- $/gallon
- $5.59
- EIA WA state weekly
- Monthly (12k mi/yr)
- $294.26
- 52.6 gallons
- Annual (12k mi/yr)
- $3531
- 632 gallons
The math
Why it costs what it costs.
- Fill cost = 12 gal × $5.59/gal = $67.09
- Miles per tank = 12 × 19 = 228
- Annual (12,000 mi) = 12,000 ÷ 19 × $5.59 = $3531
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