The Real Cost
Week of May 18, 2026 · San Diego, CA
2026 Nissan Altima
15 gal tank · 30 MPG
$89.36 to fill the tank
At $5.96/gal, this tank gets you about 450 miles.
Source: EIA · Updated May 18, 2026
By the numbers
- Fill cost
- $89.36
- 450 miles per tank
- $/gallon
- $5.96
- EIA CA state weekly
- Monthly (12k mi/yr)
- $198.57
- 33.3 gallons
- Annual (12k mi/yr)
- $2383
- 400 gallons
The math
Why it costs what it costs.
- Fill cost = 15 gal × $5.96/gal = $89.36
- Miles per tank = 15 × 30 = 450
- Annual (12,000 mi) = 12,000 ÷ 30 × $5.96 = $2383
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