The Real Cost
Week of May 18, 2026 · Denver, CO
2026 BMW X3 M50
15 gal tank · 27 MPG
$69.27 to fill the tank
At $4.62/gal, this tank gets you about 405 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $69.27
- 405 miles per tank
- $/gallon
- $4.62
- EIA CO state weekly
- Monthly (12k mi/yr)
- $171.04
- 37.0 gallons
- Annual (12k mi/yr)
- $2052
- 444 gallons
The math
Why it costs what it costs.
- Fill cost = 15 gal × $4.62/gal = $69.27
- Miles per tank = 15 × 27 = 405
- Annual (12,000 mi) = 12,000 ÷ 27 × $4.62 = $2052
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