The Real Cost
Week of May 18, 2026 · Las Vegas, NV
2026 Toyota Prius
15 gal tank · 57 MPG
$84.08 to fill the tank
At $5.61/gal, this tank gets you about 855 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $84.08
- 855 miles per tank
- $/gallon
- $5.61
- EIA West Coast weekly
- Monthly (12k mi/yr)
- $98.33
- 17.5 gallons
- Annual (12k mi/yr)
- $1180
- 211 gallons
The math
Why it costs what it costs.
- Fill cost = 15 gal × $5.61/gal = $84.08
- Miles per tank = 15 × 57 = 855
- Annual (12,000 mi) = 12,000 ÷ 57 × $5.61 = $1180
Want to customize miles per year or override the pump price you saw? Use the full calculator.