The Real Cost
Week of September 21, 2026 · San Antonio, TX
2027 Nissan Sentra
12.4 gal tank · 32 MPG
$41–$49
typical fill → full tank · 12.4 galAt $3.93/gal, this tank gets you about 397 miles.
Source: EIA · Updated September 21, 2026
12-week state trend
+$0.64 over 12 wk
Local context
San Antonio runs at $3.93/gal this week — about 12.3% below the U.S. average of $4.48. At this price the 2027 Nissan Sentra's 32 MPG returns roughly 8.1 miles per dollar (31.3 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a San Antonio driver spends about $1,473 on gas in this car (use the calculator for your own mileage). For the same car, $2,251 in California (priciest reporting state at $6.00/gal) vs. $1,473 in Texas ($3.93/gal). $778 swing.
By the numbers
Fill cost
$41–$49
typical → full · 397 mi/tank
Per gallon
$3.93
EIA TX state weekly
Monthly · 12k mi/yr
$122.78
31.3 gal
Annual · 12k mi/yr
$1473
375 gal
The math
Why it costs what it costs.
- Fill cost = 12.4 gal × $3.93/gal = $48.72
- Miles per tank = 12.4 × 32 = 397
- Annual @ 12,000 mi (typical) = 12,000 ÷ 32 × $3.93 = $1473
Want to customize miles per year or override the pump price you saw? Use the full calculator.