The Real Cost
Week of September 21, 2026 · Boston, MA
2027 Subaru Crosstrek
16.6 gal tank · 29 MPG
$61–$72
typical fill → full tank · 16.6 galAt $4.35/gal, this tank gets you about 481 miles.
Source: EIA · Updated September 21, 2026
12-week state trend
+$0.56 over 12 wk
Local context
Boston runs at $4.35/gal this week — about 2.9% below the U.S. average of $4.48. At this price the 2027 Subaru Crosstrek's 29 MPG returns roughly 6.7 miles per dollar (34.5 gallons per 1,000 miles).
At a typical 12,000 miles a year — the U.S. driving average — a Boston driver spends about $1,800 on gas in this car (use the calculator for your own mileage). For the same car, $2,484 in California (priciest reporting state at $6.00/gal) vs. $1,626 in Texas ($3.93/gal). $858 swing.
By the numbers
Fill cost
$61–$72
typical → full · 481 mi/tank
Per gallon
$4.35
EIA MA state weekly
Monthly · 12k mi/yr
$149.97
34.5 gal
Annual · 12k mi/yr
$1800
414 gal
The math
Why it costs what it costs.
- Fill cost = 16.6 gal × $4.35/gal = $72.19
- Miles per tank = 16.6 × 29 = 481
- Annual @ 12,000 mi (typical) = 12,000 ÷ 29 × $4.35 = $1800
Want to customize miles per year or override the pump price you saw? Use the full calculator.