Electric Car Efficiency vs. Gas: MPGe, Cost Per Mile (2026 Data)

Electric cars use far less energy per mile than gasoline cars. In EPA’s model year 2026 data the median EV is rated at 91 MPGe, about 37 kWh per 100 miles, against a median of 21 MPG for conventional gasoline cars. At July 2026 U.S. average electricity prices and October 2026 gasoline prices, that works out to roughly 7 cents per mile versus 21. Cold weather, hybrids and local power prices change the result.

What Is MPGe? How the EPA Compares Electric and Gas Car Efficiency

MPGe (miles per gallon gasoline equivalent) is the number the EPA puts on the fuel economy label of vehicles that do not run on liquid fuel. Fueleconomy.gov describes it as the number of miles the vehicle can go using a quantity of fuel with the same energy content as a gallon of gasoline, which lets you compare an EV with a gasoline car. The Department of Energy’s Alternative Fuels Data Center lists 1 kWh as 0.030 gallon of gasoline equivalent, so a gallon-equivalent is roughly 33 kWh.

The label carries a second number that is easier to compare: kilowatt-hours per 100 miles. Fueleconomy.gov explains that consumption figures relate directly to cost and that miles per gallon can mislead: moving from 10 to 15 MPG saves about 33 gallons over 1,000 miles, while moving from 30 to 35 MPG saves only about 5. The table below uses EPA’s model year 2026 vehicle data file from fueleconomy.gov, where each entry is a vehicle configuration, not a sales-weighted average.

Vehicle type (MY2026)	Configurations in EPA file	Median combined rating	Range	Median energy per 100 miles
Electric	321	91 MPGe	51 to 146 MPGe	37.1 kWh
Hybrid	230	26.5 MPG	14 to 57 MPG	3.8 gallons
Conventional gasoline	559	21 MPG	12 to 36 MPG	4.8 gallons

On one scale, using the AFDC factor, the median EV’s 37.1 kWh per 100 miles equals about 1.1 gallons of gasoline energy, while the median gasoline car burns about 4.8 gallons: roughly a quarter of the energy at the vehicle. The electricity still has to be generated somewhere, covered in the well-to-wheel section below.

Cost of Fuel: What an EV Actually Costs Per Mile vs. a Gas Car

Cost per mile is energy per mile times price: kWh per mile times the price per kWh for an EV, and the price per gallon divided by MPG for a gasoline car. The inputs are the EIA U.S. average residential electricity price of 18.31 cents per kWh for July 2026 (Electric Power Monthly, released September 24, 2026) and EIA weekly regular gasoline prices for October 12, 2026, with $4.331 per gallon nationally. The EV column assumes home charging at the average residential rate.

Location	Electricity (cents per kWh)	Regular gas ($ per gallon)	EV, 37.1 kWh per 100 mi (cents per mile)	Hybrid, 26.5 MPG (cents per mile)	Gas car, 21 MPG (cents per mile)
U.S. average	18.31	$4.331	6.8	16.3	20.6
Texas	15.88	$3.779	5.9	14.3	18.0
Florida	15.03	$3.982	5.6	15.0	19.0
Ohio	19.45	$3.870	7.2	14.6	18.4
New York	29.90	$4.353	11.1	16.4	20.7
Washington	14.71	$5.377	5.5	20.3	25.6
California	33.61	$6.104	12.5	23.0	29.1

At national averages the median EV costs about 6.8 cents per mile, the median hybrid about 16.3 and the median gasoline car about 20.6. Over the 15,000 miles a year that EPA uses on fuel economy labels, that is about $1,019 for the EV, $2,452 for the hybrid and $3,094 for the gasoline car, or roughly $2,075 a year between the EV and the gasoline car at today’s prices.

Location matters. Washington pairs the cheapest electricity in the table with the second-highest gasoline price, while California has the highest electricity price at 33.61 cents and the EV still costs less than half as much per mile as the gasoline car.

Two break-even numbers add context most comparisons skip. At the national gasoline price, the median EV stays cheaper per mile than the median gasoline car until electricity reaches about 56 cents per kWh, and cheaper than the median hybrid until about 44 cents. The best hybrid in the 2026 file, at 57 MPG, fuels for about 7.6 cents per mile at the national price, close to the median EV’s 6.8. For the full ownership picture see our guide to electric vs gas car cost, and for charging math see how much it costs to charge an electric car.

Energy Consumption: Why Electric Motors Beat Gas Engines

Fueleconomy.gov says most of a gasoline engine’s fuel energy is lost as heat, which is why only a minority of it moves the car. The comparison below comes from fueleconomy.gov, Where the Energy Goes: Electric Cars.

Where the energy goes	Electric car	Gasoline car
Energy used to move the car	60% to 66% city, 71% to 73% highway	About 12% to 30%, depending on drive cycle
Drive system or engine loss	15% to 20%	64% to 75%
Braking energy	Partly recaptured by regenerative braking	Lost as heat at the brakes
Standing still	Motor stops, no energy used idling	Idling gets 0 miles per gallon

EPA’s own EV page quotes higher numbers from a different starting point: EVs use approximately 87% to 91% of the energy from the battery and regenerative braking to propel the vehicle, while gasoline vehicles convert about 16% to 25% of the energy in gasoline into movement. The fueleconomy.gov diagrams also count charging losses from converting grid AC to battery DC, so quote one source at a time. Its estimates are based primarily on a 2012 Nissan Leaf analysis, so they show the general pattern, not any one new model.

City versus highway matters for your own driving. Fueleconomy.gov says EVs are most efficient in stop-and-go city driving because regenerative braking recovers energy where there is more braking, and that it offers little advantage on the highway. Counting regenerated energy as reused, it puts EV efficiency above 94% in the city and 77% on the highway, so the gap over a gasoline car is widest in town.

Does an EV’s Real Efficiency Depend on Your Electricity Source? (The Well-to-Wheel Caveat)

The numbers above measure energy use in the vehicle, not where the energy came from. An EV charged on a coal-heavy grid is not as clean as one charged on a grid with more wind, solar or nuclear. The full accounting, from energy source to wheels, is called well-to-wheel efficiency, and simple efficiency comparisons skip it.

EPA’s answer, on EPA, Electric Vehicle Myths, is that generating charging electricity may create carbon pollution in amounts that vary widely with the local power mix, but that research shows an EV is typically responsible for lower greenhouse gas levels than an average new gasoline car even so. EPA points readers to its Power Profiler, where a ZIP code shows the regional energy mix, and to the EPA and Department of Energy Beyond Tailpipe Emissions Calculator, which estimates emissions for an EV or plug-in hybrid where you live.

Maintenance Expenses

The Department of Energy’s Alternative Fuels Data Center says all-electric vehicles typically require less maintenance than conventional vehicles: the battery, motor and electronics need little to no regular maintenance, there are fewer fluids such as engine oil, brake wear is significantly reduced by regenerative braking, and there are far fewer moving parts. Hybrids and plug-in hybrids keep an engine, so their maintenance is similar to a conventional car’s.

The main EV-specific item is the battery. AFDC notes that many manufacturers offer 8-year, 100,000-mile battery warranties, and that replacement pricing outside warranty is usually not published and is expected to be significant. For service specifics see whether electric cars need servicing.

Environmental Impact

Electric cars have no tailpipe emissions, but that is not the whole picture. Fueleconomy.gov’s label guide notes that the label’s greenhouse gas rating counts only tailpipe emissions, so it does not reflect power plant emissions from charging.

EPA addresses this directly. Citing Argonne National Laboratory estimates for a gasoline car at 30.7 MPG and an EV with a 300-mile range, it says the EV’s manufacturing and end-of-life emissions are higher but its total greenhouse gases are still lower, and that over a lifetime the total for manufacturing, charging and driving an EV is typically lower than for a gasoline car. EPA calls those estimates illustrative. On battery life, EPA reports a study of about 15,000 vehicles in which failure-related battery replacements averaged 2.5%, and below 0.5% for model year 2016 and later.

Cold Weather: How Much Efficiency Do EVs and Gas Cars Lose?

Cold weather is where the efficiency story changes most. Fueleconomy.gov reports that EV fuel economy can drop roughly 39% in mixed driving and range by 41%, versus about 15% for a gasoline car in city driving, with the EV figures based on a 2019 AAA study (fueleconomy.gov, Fuel Economy in Cold Weather).

At 20°F vs about 75°F	Fuel economy change	Note
Gasoline car, city driving	About 15% lower	Up to 24% lower on 3 to 4 mile trips
Hybrid	About 30% to 34% lower	Typical range from the same tests
EV with cabin heater	About 39% lower, range about 41% lower	About two-thirds of the extra energy heats the cabin
EV without cabin heater	About 8% lower, range about 12% lower	Shows the heater is the main cost

Apply those percentages to the national averages above, as rough arithmetic and not a measurement: the median EV rises from about 6.8 to about 11 cents per mile, and the median gasoline car from about 20.6 to about 24 cents. The EV still costs less to fuel at 20°F, but the ratio narrows from roughly one third to roughly 46%. Fueleconomy.gov’s tips for plug-in vehicles: preheat the cabin while plugged in, and use seat warmers instead of the cabin heater to extend range. See also how electric cars lose charge in cold weather.

Long-Term Savings: Fuel, Maintenance and Battery Warranty

Fuel is the savings you can calculate. Using the figures above for 15,000 miles a year, the median EV saves about $2,075 a year against the median gasoline car and about $1,433 against the median hybrid. Over five years, the period EPA uses on the label, and at today’s prices held flat, that is about $10,373 against the gasoline car. Maintenance adds a smaller saving that is harder to price. Purchase price, insurance, home charger installation and resale value are separate, so compare those for the exact vehicle you are considering.

Government Incentives (2026 Update: The Federal Credit Has Ended)

Many older guides still describe the federal EV tax credit as available. The IRS says the New Clean Vehicle Credit, which was worth up to $7,500, is not available for vehicles acquired after September 30, 2025, and that a vehicle placed in service after that date qualifies only if it was acquired on or before September 30, 2025. State, utility and local incentives are separate programs that vary by location, so check your state energy office and utility.

Which Is Right for You? A Quick Decision Guide

• You can charge at home and drive mostly short and medium trips: the fuel advantage in the table is largest here, especially in the city.
• Electricity is expensive where you live: compare your cents per kWh with the break-even figures above.
• You want most of the savings without plugging in: compare hybrids, which can fuel at a cost close to the median EV. See the best hybrid cars for gas mileage.

Related reading: does Tesla make gas cars, how electric car batteries are made, when gas cars could be banned and electric cars vs petrol cars.

What This Guide Does Not Cover

• Purchase prices, insurance, resale values and home charger installation costs.
• Prices at public charging networks, which differ from home electricity rates.
• State, utility and local incentives.

Frequently Asked Questions

What Is MPGe and How Is It Calculated?

MPGe (miles per gallon gasoline equivalent) is the EPA’s way to compare electric and gasoline vehicles. It shows how many miles a vehicle can go on a quantity of fuel with the same energy content as a gallon of gasoline. The label also lists kWh per 100 miles, which tracks cost more directly.

What Is the Efficiency of Electric Cars Compared to Gas Cars?

In EPA’s model year 2026 data the median electric car is rated at 91 MPGe, about 37 kWh per 100 miles, while the median conventional gasoline car is rated at 21 MPG. Fueleconomy.gov says only about 12% to 30% of a conventional vehicle’s fuel energy moves it down the road.

How Do Electric Cars Save Energy?

Their motors avoid combustion heat losses, stop when the car stops so nothing is wasted idling, and regenerative braking recovers energy that friction brakes would turn into heat. Fueleconomy.gov notes this makes them most efficient in stop-and-go city driving.

How Much Does It Cost Per Mile to Drive an Electric Car vs. a Gas Car?

At the U.S. average residential price of 18.31 cents per kWh (EIA, July 2026), the median 2026 EV at 37.1 kWh per 100 miles costs about 6.8 cents per mile to charge at home. At EIA’s $4.331 national gasoline price on October 12, 2026, a 21 MPG gasoline car costs about 20.6 cents per mile and a 26.5 MPG hybrid about 16.3 cents.

Are Electric Cars Cheaper to Run Than Gas Cars?

On fuel, usually yes: the median EV costs roughly a third as much per mile as the median gasoline car at national average prices, and all-electric vehicles typically need less maintenance per the Department of Energy. The gap narrows in cold weather, against hybrids, and where electricity is expensive.

Does an Electric Car’s True Efficiency Depend on How the Electricity Is Made?

The car’s own efficiency does not change, but the emissions behind it do. EPA says charging emissions vary widely with the local power mix, and that an EV is still typically responsible for lower greenhouse gas levels than an average new gasoline car.

Do Electric Cars Emit Less Pollution?

Electric cars have no tailpipe emissions, which cuts local exhaust pollution. Power plants can emit when generating the charging electricity, and EPA says an EV’s total lifetime greenhouse gas emissions, including manufacturing, are typically lower than a gasoline car’s.

Conclusion

Electric cars are clearly more efficient at the vehicle level: about 37 kWh per 100 miles for the median 2026 EV against about 4.8 gallons for the median gasoline car, and roughly 7 cents per mile versus 21 at national average prices. The advantage narrows in cold weather and against efficient hybrids, so use the formula in this guide with your own electricity price and driving.