The Real Cost
Week of May 18, 2026 · Las Vegas, NV
2026 Mazda 3 4-Door 2WD
13 gal tank · 30 MPG
$72.87 to fill the tank
At $5.61/gal, this tank gets you about 390 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $72.87
- 390 miles per tank
- $/gallon
- $5.61
- EIA West Coast weekly
- Monthly (12k mi/yr)
- $186.83
- 33.3 gallons
- Annual (12k mi/yr)
- $2242
- 400 gallons
The math
Why it costs what it costs.
- Fill cost = 13 gal × $5.61/gal = $72.87
- Miles per tank = 13 × 30 = 390
- Annual (12,000 mi) = 12,000 ÷ 30 × $5.61 = $2242
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