The Real Cost
Week of May 18, 2026 · San Antonio, TX
2026 Honda Odyssey
20 gal tank · 22 MPG
$77.76 to fill the tank
At $3.89/gal, this tank gets you about 440 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $77.76
- 440 miles per tank
- $/gallon
- $3.89
- EIA TX state weekly
- Monthly (12k mi/yr)
- $176.73
- 45.5 gallons
- Annual (12k mi/yr)
- $2121
- 545 gallons
The math
Why it costs what it costs.
- Fill cost = 20 gal × $3.89/gal = $77.76
- Miles per tank = 20 × 22 = 440
- Annual (12,000 mi) = 12,000 ÷ 22 × $3.89 = $2121
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