The Real Cost
Week of November 2, 2026 · Dallas, TX
2026 Mazda 3 4-Door
2.5L I4 FWD · 13.2 gal tank · 30 MPG · manufacturer spec
$40–$47
typical fill → full tank · 13.2 galAt $3.58/gal, this tank gets you about 396 miles.
Source: EIA · Updated November 2, 2026
12-week state trend
+$0.06 over 12 wk
Local context
Dallas runs at $3.58/gal this week — about 13.8% below the U.S. average of $4.15. At this price the 2026 Mazda 3 4-Door's 30 MPG returns roughly 8.4 miles per dollar (33.3 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Dallas driver spends about $1,431 on gas in this car (use the calculator for your own mileage). For the same car, $2,299 in California (priciest reporting state at $5.75/gal) vs. $1,431 in Texas ($3.58/gal). $868 swing.
By the numbers
Fill cost
$40–$47
typical → full · 396 mi/tank
Per gallon
$3.58
EIA TX state weekly
Monthly · 12k mi/yr
$119.27
33.3 gal
Annual · 12k mi/yr
$1431
400 gal
The math
Why it costs what it costs.
- Fill cost = 13.2 gal × $3.58/gal = $47.23
- Miles per tank = 13.2 × 30 = 396
- Annual @ 12,000 mi (typical) = 12,000 ÷ 30 × $3.58 = $1431
Want to customize miles per year or override the pump price you saw? Use the full calculator.