The Real Cost
Week of November 2, 2026 · Phoenix, AZ
2023 Mazda CX-9
2.5L I4 4WD · 19 gal tank · 23 MPG · manufacturer spec
$77–$91
typical fill → full tank · 19 galAt $4.77/gal, this tank gets you about 437 miles.
Source: EIA · Updated November 2, 2026
12-week state trend · padd proxy
+$0.13 over 12 wk
Local context
Phoenix runs at $4.77/gal this week — about 14.9% above the U.S. average of $4.15. At this price the 2023 Mazda CX-9's 23 MPG returns roughly 4.8 miles per dollar (43.5 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Phoenix driver spends about $2,489 on gas in this car (use the calculator for your own mileage). For the same car, $2,999 in California (priciest reporting state at $5.75/gal) vs. $1,867 in Texas ($3.58/gal). $1,132 swing.
By the numbers
Fill cost
$77–$91
typical → full · 437 mi/tank
Per gallon
$4.77
EIA West Coast excl. California weekly
Monthly · 12k mi/yr
$207.43
43.5 gal
Annual · 12k mi/yr
$2489
522 gal
The math
Why it costs what it costs.
- Fill cost = 19 gal × $4.77/gal = $90.65
- Miles per tank = 19 × 23 = 437
- Annual @ 12,000 mi (typical) = 12,000 ÷ 23 × $4.77 = $2489
Want to customize miles per year or override the pump price you saw? Use the full calculator.