Gas Fill-up Cost Calculator

Pick your year + make + model + trim + engine. Get the real number.

Source: EIA · Updated September 28, 2026
Vehicle
Fuel type

Per gallon

4.46

Regional avg

Example — Per Fill-Up

typical fill · full tank

15.8 gal · empty→full = max

manufacturer spec

Showing example math for the default vehicle. Pick your year, make, model, and ZIP for your real numbers.

Example · Monthly

$140

31.3 gal/mo

Example · Annual

$1674

375 gal/yr

Price: $4.46/gal · EIA national weekly · week of 2026-09-28

How this works

Pick a year, make, model and trim, and a ZIP. We look up the car's rated tank size and EPA combined MPG in the fueleconomy.gov database, take this week's EIA regular-gasoline price for your state (or your PADD region where EIA has no state figure), and multiply. Fill-up = tank × price. Annual = (miles per year ÷ MPG) × price; monthly is a twelfth of that.

Two limits. First, the tank figure is the manufacturer's rated capacity, and almost nobody pumps that much: the low-fuel light comes on early and the pump clicks off a little short, so we show a typical fill at 85% next to the full figure. Second, EPA combined MPG is a test-cycle number. Cold weather, short trips and a heavy foot bring it down, and your real cost goes up by the same proportion. Treat the result as an estimate, not a receipt.