The Real Cost
Week of September 21, 2026 · San Francisco, CA
2026 GMC Sierra
24 gal tank · 17 MPG
$122–$144
typical fill → full tank · 24 galAt $6.00/gal, this tank gets you about 408 miles.
Source: EIA · Updated September 21, 2026
12-week state trend
+$0.83 over 12 wk
Local context
San Francisco runs at $6.00/gal this week — about 34.1% above the U.S. average of $4.48. At this price the 2026 GMC Sierra's 17 MPG returns roughly 2.8 miles per dollar (58.8 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a San Francisco driver spends about $4,237 on gas in this car (use the calculator for your own mileage). For the same car, $4,237 in California (priciest reporting state at $6.00/gal) vs. $2,773 in Texas ($3.93/gal). $1,464 swing.
By the numbers
Fill cost
$122–$144
typical → full · 408 mi/tank
Per gallon
$6.00
EIA CA state weekly
Monthly · 12k mi/yr
$353.12
58.8 gal
Annual · 12k mi/yr
$4237
706 gal
The math
Why it costs what it costs.
- Fill cost = 24 gal × $6.00/gal = $144.07
- Miles per tank = 24 × 17 = 408
- Annual @ 12,000 mi (typical) = 12,000 ÷ 17 × $6.00 = $4237
Want to customize miles per year or override the pump price you saw? Use the full calculator.