Annual Fuel Cost
Project a full year of fuel spending from mileage and MPG.
About Annual Fuel Cost
Annual fuel spend is the total miles divided by economy and multiplied by the fuel price, with a per-100-mile figure normalized for comparison. Two cars with a 3 MPG difference can differ by hundreds of dollars a year for a heavy commuter, so this baseline matters when choosing.
Formula
Annual Fuel Cost
Annual = miles / MPG x price; per 100 miles = price / MPG x 100
- per 100 miles
- A normalized cost that is easy to compare between cars
Worked example
With the default values below, Annual Fuel Cost returns Annual Fuel Cost of $1,824.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Miles per yearminimum 0 mi
- 12,000 mi
- Vehicle MPGminimum 0.1 mpg
- 25 mpg
- Fuel priceminimum 0.001 $/gal
- 3.8 $/gal
Results
- Annual Fuel Cost
- $1,824.00
- Gallons per Year
- 480 gal
- Monthly Fuel Cost
- $152.00
- Cost per 100 Miles
- $15.20
Step by step
- 1Values used
- 2Annual Fuel Cost
- 3Annual Fuel Cost= 1,824.00
- 4Gallons per Year= 480 gal
- 5Monthly Fuel Cost= 152.00
- 6Cost per 100 Miles= 15.20
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or fees or charges into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Annual Fuel Cost calculated?
Annual = miles / MPG x price; per 100 miles = price / MPG x 100 Annual fuel spend is the total miles divided by economy and multiplied by the fuel price, with a per-100-mile figure normalized for comparison.
Why does Annual Fuel Cost matter?
Two cars with a 3 MPG difference can differ by hundreds of dollars a year for a heavy commuter, so this baseline matters when choosing.
What values do I need to enter?
This calculator takes 3 inputs: Miles per year, Vehicle MPG, Fuel price. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.