The Real Cost
Week of May 18, 2026 · Tucson, AZ
2026 Cadillac XT5 AWD
15 gal tank · 21 MPG
$84.08 to fill the tank
At $5.61/gal, this tank gets you about 315 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $84.08
- 315 miles per tank
- $/gallon
- $5.61
- EIA West Coast weekly
- Monthly (12k mi/yr)
- $266.90
- 47.6 gallons
- Annual (12k mi/yr)
- $3203
- 571 gallons
The math
Why it costs what it costs.
- Fill cost = 15 gal × $5.61/gal = $84.08
- Miles per tank = 15 × 21 = 315
- Annual (12,000 mi) = 12,000 ÷ 21 × $5.61 = $3203
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