The Real Cost
Week of May 18, 2026 · San Diego, CA
2026 Ford Mustang
12 gal tank · 19 MPG
$71.48 to fill the tank
At $5.96/gal, this tank gets you about 228 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $71.48
- 228 miles per tank
- $/gallon
- $5.96
- EIA CA state weekly
- Monthly (12k mi/yr)
- $313.53
- 52.6 gallons
- Annual (12k mi/yr)
- $3762
- 632 gallons
The math
Why it costs what it costs.
- Fill cost = 12 gal × $5.96/gal = $71.48
- Miles per tank = 12 × 19 = 228
- Annual (12,000 mi) = 12,000 ÷ 19 × $5.96 = $3762
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