The Real Cost
Week of September 21, 2026 · Miami, FL
2023 Mercedes-Benz GLC300
17.4 gal tank · 22 MPG · manufacturer spec
$63–$74
typical fill → full tank · 17.4 galAt $4.27/gal, this tank gets you about 383 miles.
Source: EIA · Updated September 21, 2026
12-week state trend
+$0.55 over 12 wk
Local context
Miami runs at $4.27/gal this week — about 4.7% below the U.S. average of $4.48. At this price the 2023 Mercedes-Benz GLC300's 22 MPG returns roughly 5.2 miles per dollar (45.5 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Miami driver spends about $2,327 on gas in this car (use the calculator for your own mileage). For the same car, $3,274 in California (priciest reporting state at $6.00/gal) vs. $2,143 in Texas ($3.93/gal). $1,131 swing.
By the numbers
Fill cost
$63–$74
typical → full · 383 mi/tank
Per gallon
$4.27
EIA weekly — Miami
Monthly · 12k mi/yr
$193.91
45.5 gal
Annual · 12k mi/yr
$2327
545 gal
The math
Why it costs what it costs.
- Fill cost = 17.4 gal × $4.27/gal = $74.23
- Miles per tank = 17.4 × 22 = 383
- Annual @ 12,000 mi (typical) = 12,000 ÷ 22 × $4.27 = $2327
Want to customize miles per year or override the pump price you saw? Use the full calculator.