The Real Cost
Week of May 18, 2026 · Houston, TX
2026 BMW X5 M Competition
24 gal tank · 15 MPG
$93.31 to fill the tank
At $3.89/gal, this tank gets you about 360 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $93.31
- 360 miles per tank
- $/gallon
- $3.89
- EIA TX state weekly
- Monthly (12k mi/yr)
- $259.20
- 66.7 gallons
- Annual (12k mi/yr)
- $3110
- 800 gallons
The math
Why it costs what it costs.
- Fill cost = 24 gal × $3.89/gal = $93.31
- Miles per tank = 24 × 15 = 360
- Annual (12,000 mi) = 12,000 ÷ 15 × $3.89 = $3110
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