The Real Cost
Week of November 2, 2026 · San Antonio, TX
2024 BMW X3
3.0L V6 Premium AWD M · 17.7 gal tank · 17 MPG · manufacturer spec
$54–$63
typical fill → full tank · 17.7 galAt $3.58/gal, this tank gets you about 301 miles.
Source: EIA · Updated November 2, 2026
12-week state trend
+$0.06 over 12 wk
Local context
San Antonio runs at $3.58/gal this week — about 13.8% below the U.S. average of $4.15. At this price the 2024 BMW X3's 17 MPG returns roughly 4.8 miles per dollar (58.8 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a San Antonio driver spends about $2,526 on gas in this car (use the calculator for your own mileage). For the same car, $4,057 in California (priciest reporting state at $5.75/gal) vs. $2,526 in Texas ($3.58/gal). $1,532 swing.
By the numbers
Fill cost
$54–$63
typical → full · 301 mi/tank
Per gallon
$3.58
EIA TX state weekly
Monthly · 12k mi/yr
$210.47
58.8 gal
Annual · 12k mi/yr
$2526
706 gal
The math
Why it costs what it costs.
- Fill cost = 17.7 gal × $3.58/gal = $63.33
- Miles per tank = 17.7 × 17 = 301
- Annual @ 12,000 mi (typical) = 12,000 ÷ 17 × $3.58 = $2526
Want to customize miles per year or override the pump price you saw? Use the full calculator.