The Real Cost
Week of September 21, 2026 · Phoenix, AZ
2026 Chevrolet Trailblazer
13.2 gal tank · 30 MPG
$63–$74
typical fill → full tank · 13.2 galAt $5.60/gal, this tank gets you about 396 miles.
Source: EIA · Updated September 21, 2026
12-week state trend · padd proxy
+$0.77 over 12 wk
Local context
Phoenix runs at $5.60/gal this week — about 25.1% above the U.S. average of $4.48. At this price the 2026 Chevrolet Trailblazer's 30 MPG returns roughly 5.4 miles per dollar (33.3 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Phoenix driver spends about $2,240 on gas in this car (use the calculator for your own mileage). For the same car, $2,401 in California (priciest reporting state at $6.00/gal) vs. $1,572 in Texas ($3.93/gal). $830 swing.
By the numbers
Fill cost
$63–$74
typical → full · 396 mi/tank
Per gallon
$5.60
EIA West Coast weekly
Monthly · 12k mi/yr
$186.67
33.3 gal
Annual · 12k mi/yr
$2240
400 gal
The math
Why it costs what it costs.
- Fill cost = 13.2 gal × $5.60/gal = $73.92
- Miles per tank = 13.2 × 30 = 396
- Annual @ 12,000 mi (typical) = 12,000 ÷ 30 × $5.60 = $2240
Want to customize miles per year or override the pump price you saw? Use the full calculator.