The Real Cost
Week of September 21, 2026 · San Antonio, TX
2026 Lexus RX 350h
17.2 gal tank · 36 MPG
$57–$68
typical fill → full tank · 17.2 galAt $3.93/gal, this tank gets you about 619 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 2026 Lexus RX 350h's 36 MPG returns roughly 9.2 miles per dollar (27.8 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a San Antonio driver spends about $1,310 on gas in this car (use the calculator for your own mileage). For the same car, $2,001 in California (priciest reporting state at $6.00/gal) vs. $1,310 in Texas ($3.93/gal). $691 swing.
By the numbers
Fill cost
$57–$68
typical → full · 619 mi/tank
Per gallon
$3.93
EIA TX state weekly
Monthly · 12k mi/yr
$109.14
27.8 gal
Annual · 12k mi/yr
$1310
333 gal
The math
Why it costs what it costs.
- Fill cost = 17.2 gal × $3.93/gal = $67.58
- Miles per tank = 17.2 × 36 = 619
- Annual @ 12,000 mi (typical) = 12,000 ÷ 36 × $3.93 = $1310
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