Compare two vehicles in gallons a year
Choose a model year, make, model and version for each side. Change the miles and the share of city driving to match how you drive.
Gallons a year at 15,000 miles
Vehicle B uses 241.6 gal less a year, 45% less than vehicle A.
| EPA label | A | B |
|---|---|---|
| City | 25 MPG | 52 MPG |
| Highway | 34 MPG | 49 MPG |
| Combined | 28 MPG | 51 MPG |
| Per 100 miles | 3.57 gal | 1.96 gal |
| Fuel | Regular Gasoline | Regular Gasoline |
At 55% city driving the EPA combined label is used. EPA label values; your own mileage will differ.
Model year 2027 is partial: EPA is still releasing its ratings. Source: U.S. EPA and U.S. DOE, FuelEconomy.gov data, ratings as of October 28, 2026.
How to use it
Each side starts with a model year. The make, model and version lists then show only what EPA rated for that year. A version is one engine, transmission and drive combination; the 2015 Camry above has four versions, for example. Enter the miles you drive in a year (1,000 to 100,000) and move the city slider if your driving is mostly town or mostly highway. The page address updates as you go, so a comparison can be bookmarked or sent on. Every model page on this site has a button that opens this calculator with its own best version already picked.
What the numbers mean
Gallons a year is your miles divided by the EPA combined MPG when city driving is left at 55%, the split EPA uses for its combined figure. At any other split the calculator weights the city and highway labels by your share, which can differ from the combined label by a fraction of an MPG: EPA rounds each label to a whole number.
Per 100 miles turns MPG around: 100 divided by MPG. It grows in a straight line with fuel use, so differences are easier to read than in MPG. Going from 10 to 15 MPG saves more fuel than going from 30 to 50 MPG over the same distance.
Electric versions show kilowatt-hours a year and the gasoline-gallon equivalent (33.705 kWh per gallon), never gallons of gasoline. Plug-in hybrids show gallons as if driven on gasoline only, plus a separate line for driving on electricity only; the real mix depends on charging.
Assumptions and source
EPA label estimates for the vehicle as tested; About the data explains how EPA revised the 1984–2007 values in 2008. Real consumption depends on weather, load, speed and upkeep. The calculator shows fuel volume only and does not estimate costs. Ratings come from U.S. EPA and U.S. DOE, FuelEconomy.gov data, as of October 28, 2026. Model year 2027 is partial: only the versions EPA has released so far can be picked.