This tool prices the electricity to drive an electric vehicle a distance you choose, and it sets that next to gasoline for a car whose miles per gallon you also choose. The energy use of the electric vehicle comes from fueleconomy.gov. The miles, the two electric rates, and the gasoline car's miles per gallon are inputs. None of them is a survey of how far people drive.
Pick a model first. The list is battery-electric vehicles, model year 2024 or newer, from the fueleconomy.gov vehicles file retrieved October 10, 2026. Rows are grouped by make and model. The page uses the newest year in that group and the median combined kilowatt-hours per 100 miles of that year's trims. The note under the results names the vehicle id, the trim whose group supplied the median, and the city and highway figures when the file has them. Combined is the figure the dollars use. City and highway are shown so you can see the spread. They are not averaged again.
The miles box starts at 10,000. That is a round starting value, not a claim about annual driving. Type the miles you want to price: a month, a commute, or a year. Kilowatt-hours are miles times the combined kilowatt-hours per 100 miles, divided by 100. Dollars are those kilowatt-hours times the cents per kWh you entered, rounded to the cent.
Home and public each have a rate box because the price of a kilowatt-hour is not the same in a garage and at a public charger. Both boxes start at the EIA-861 2025 U.S. residential all-in average. Replace the home rate with your utility's price from the bill calculator. The public-rate box stays on that residential average until you replace it with the price posted at the charger you use. The two results use the same kilowatt-hours. Only the rate changes. The tool does not subtract charging losses, idle fees, or a session fee, because those are not in the fueleconomy.gov row.
The gasoline column is the same miles divided by the miles per gallon you type, times the U.S. regular gasoline price printed in the note. That price is the EIA weekly series for the week shown there, all formulations. The default of 30 miles per gallon is an input you should change. The comparison is only as fair as that input. It ignores maintenance, purchase price, and the difference between a particular gasoline car and the electric model you picked.
Model pages under EV charging cost use the same combined rating, priced for 100 miles at the U.S. residential average. Use this tool when you want a different distance or a different rate. The methodology page records the file URL, the model-year cutoff, and the median rule.
Home charging
$666.80
3,870.0 kWh at 17.23¢/kWh
Public charging
$666.80
3,870.0 kWh at 17.23¢/kWh
Gasoline at the MPG you entered
$1,451.33
333.3 gal at $4.35/gal
2025 Mercedes-Benz EQB (EQB 300 4matic) uses 38.7 kWh/100 miles combined in fueleconomy.gov vehicle 49117. City 37.7, highway 39.8. Trims of the same model year are grouped, and the page uses the median combined rating. The mileage box starts at 10,000 so you can see a full year. Change it to match your driving. Gasoline is U.S. regular, all formulations, $4.354/gal for the week of 2026-10-05, EIA. The home rate starts at the EIA-861 2025 U.S. residential average of 17.23¢/kWh. The public rate starts at the same average. Replace it with the cents per kilowatt-hour on a charger receipt.