Breakeven Math

Vehicles & transport

What EV Breakeven Depends On: Electricity, Gas and Where You Charge

The miles a year an electric car must be driven to cost less than a gas car over eight years, across electricity and gasoline prices, state electricity rates and charging access.

Breakeven Math · October 2, 2026

Run your own numbers with the EV vs Gas vs Hybrid Cost Calculator.

An electric car usually costs more to buy and less to run. Whether it ends up cheaper depends on how quickly the running-cost gap repays the price gap, and that gap is set mostly by two prices the buyer does not control: what electricity costs where the car is charged, and what gasoline costs where the alternative would be filled. Since the IRS confirmed that the federal new clean vehicle credit is not available for vehicles acquired after Sept. 30, 2025, there is no federal discount to close the price gap first.

This analysis uses the defaults of the EV vs gas vs hybrid calculator: a $42,000 electric car using 28 kWh per 100 miles, a $29,000 gas car at 32 MPG, a $1,200 home charger, maintenance of $400 and $750 a year, insurance of $1,900 and $1,500, resale of 40% and 42% after eight years, and 2% a year growth in energy prices. The figure that summarizes each case is the breakeven mileage: the miles driven each year at which the electric car’s total cost over eight years equals the gas car’s.

Cost per mile is where the two prices meet

At 28 kWh per 100 miles, every cent on the price of a kilowatt-hour adds 0.28 cents to the cost of a mile. At 32 MPG, every 10 cents on the price of a gallon adds about 0.31 cents. At the U.S. average residential price of 18.31 cents per kWh in July 2026, reported in EIA’s Electric Power Monthly, home charging costs about 5.1 cents a mile. At the U.S. Energy Information Administration’s U.S. regular gasoline average of $4.465 for the week of Sept. 28, 2026, the gas car’s fuel costs about 14.0 cents a mile. With 15% of charging at a 45-cent public rate, the electric car’s blended energy cost is about 6.2 cents a mile, a gap of about 7.8 cents. At 12,000 miles that is about $935 in the first year, and after the differences in maintenance and insurance the electric car runs about $885 a year cheaper. That is what has to repay a $14,200 difference in upfront cost.

Breakeven mileage across electricity and gasoline prices

The table below shows the breakeven mileage for a range of home electricity and gasoline prices, with 85% of charging at home and the rest at a public rate of 45 cents per kWh. Lower figures mean the electric car pays for itself at more ordinary mileage.

Home electricityGas $2.50Gas $3.50Gas $4.47Gas $5.00
10¢/kWh32,80017,40012,00010,200
15¢/kWh49,40021,20013,70011,400
20¢/kWh100,00027,10015,90013,000
30¢/kWhover 150,00061,00023,50017,600
40¢/kWhover 150,000over 150,00045,40027,600

Both prices matter, and they matter most together. At $4.47 gasoline, moving electricity from 10 to 40 cents raises the breakeven from 12,000 to 45,400 miles a year. At 20-cent electricity, moving gasoline from $3.50 to $5.00 lowers it from 27,100 to 13,000. When gasoline is cheap, no realistic electricity price produces a breakeven within eight years: at $2.50 a gallon, even 10-cent power needs 32,800 miles a year.

What the spread of state electricity prices does

Electricity prices vary more from state to state than gasoline prices do. In July 2026, EIA’s table shows residential prices from 12.72 cents per kWh in Louisiana to 33.61 cents in California and 48.0 cents in Hawaii. Holding gasoline at the national average, the same comparison gives very different answers:

State (July 2026 rate)Home charging cost per mileBreakeven miles per year
Louisiana (12.72¢)3.6¢12,800
U.S. average (18.31¢)5.1¢15,100
California (33.61¢)9.4¢28,500
Hawaii (48.0¢)13.4¢none under 150,000

Gasoline prices differ by state as well, and states with expensive electricity often have expensive gasoline, which narrows these differences. The table holds gasoline constant to isolate the electricity effect; the calculator lets both be set to local prices.

Charging away from home

The biggest single change is losing access to home charging. Public charging priced at 45 cents per kWh costs about 12.6 cents a mile at 28 kWh per 100 miles, close to the gas car’s 14.0 cents. With no home charging at all, the breakeven mileage at $4.47 gasoline rises to about 84,900 miles a year, and at $5.00 to about 38,400. For a driver without a garage or workplace charging, the running-cost advantage that the comparison depends on is mostly gone.

The hybrid in the middle

The default hybrid, $33,000 at 50 MPG, costs $4,000 more than the gas car and saves about $600 a year on fuel at $4.47 gasoline. It pays back that premium in year 5.9 and, after eight years and resale, costs $44,958 against $49,207 for the gas car and $51,159 for the electric car. Because its fuel cost tracks gasoline and not electricity, the hybrid’s result does not depend on charging access at all.

What these numbers leave out

The comparison does not include battery replacement or degradation, which mainly affect cars kept well beyond eight years; it uses fixed insurance and maintenance figures that should be replaced with real quotes; and it treats resale shares as known, although used-EV prices have moved more than used gas-car prices. State incentives and registration surcharges for electric vehicles change the upfront and yearly costs and are inputs in the calculator.

Assumptions

Prices as of October 2, 2026: gasoline $4.465 per gallon (EIA, week of Sept. 28, 2026); residential electricity 18.31 cents per kWh U.S. average and state figures as listed (EIA, July 2026). Vehicle prices, efficiencies, maintenance, insurance, resale and the public charging price are illustrative defaults of the calculator. Breakeven mileages are rounded to the nearest 100.

Educational analysis, not advice. Figures are illustrative; consult a professional for your situation.