Electricity costs roughly one-third to one-half what gasoline costs per mile in most U.S. states, but the purchase price difference means you need to drive enough miles to break even

An electric car costs less to run than a gas car, but the math depends on three things: what you pay for electricity where you live, what gas costs, and how long you keep the car. In most of the United States, charging an electric car costs about $0.03 to $0.05 per mile, while gasoline costs $0.10 to $0.15 per mile depending on gas prices and your car's fuel economy. That advantage shrinks in states where electricity is expensive and gas is cheap, and grows in states where the opposite is true. Over five to seven years of ownership, most people save money with an electric car — but you have to drive enough miles to make up the higher purchase price first.

The real question is not whether electricity is cheaper per mile — it almost always is — but whether the fuel savings recover the $5,000 to $15,000 price premium you pay upfront. For someone driving 12,000 to 15,000 miles per year, that payback period is typically 9 to 15 years without incentives, or 6 to 9 years with federal tax credits. If you drive more miles or keep the car longer, the savings grow.

Key Takeaways

  • Electricity costs roughly $0.03 to $0.05 per mile in most U.S. states, while gasoline costs $0.10 to $0.15 per mile depending on gas prices and your car's fuel economy.
  • An electric car typically costs $5,000 to $15,000 more upfront than a comparable gas car, so you need to drive enough miles to recover that difference through fuel savings.
  • Maintenance costs are significantly lower for electric cars because they have fewer moving parts, no oil changes, and less brake wear due to regenerative braking.
  • Your state's electricity rates and local gas prices matter — charging costs vary widely by region, and gas price swings can change the payback timeline.
  • Federal tax credits up to $7,500 and some state rebates can reduce the purchase price gap by $2,000 to $9,500, shortening the payback period by several years.

How electricity costs compare to gas, mile by mile

The cost per mile for electricity depends on two numbers: your local electricity rate and how efficiently your car converts that power into motion. Most electric cars travel between 3 and 4 miles per kilowatt-hour (kWh) of electricity. If your electricity costs $0.12 per kWh — close to the U.S. average — you pay roughly $0.03 to $0.04 per mile. This is the cost you see on your home electricity bill, not a special rate for charging.

A gas car that gets 25 miles per gallon costs about $0.12 per mile when gas is $3 per gallon, and $0.16 per mile when gas is $4 per gallon. A more efficient gas car at 35 miles per gallon costs $0.09 to $0.11 per mile. So on fuel alone, an electric car saves you $0.05 to $0.12 per mile — a difference that compounds quickly over thousands of miles. A 12,000-mile year saves you $600 to $1,440 in fuel costs.

But electricity rates vary by state and even by time of day. California and Hawaii have the highest rates, around $0.16 to $0.20 per kWh, which narrows the savings. Louisiana and Oklahoma have rates around $0.08 per kWh, which widens it. Some utilities offer lower rates for charging during off-peak hours (usually late evening or early morning), which can cut your per-mile cost by 20 to 30 percent if you charge at home on that schedule.

The purchase price gap and how long it takes to break even

A new electric car typically costs $5,000 to $15,000 more than a gas car in the same class. A Tesla Model 3 Standard Range starts around $43,000, while a comparable gas sedan like a Honda Accord starts around $28,000. That $15,000 difference is real money you have to recover through lower fuel costs before the financial advantage appears on your balance sheet.

If you save $0.08 per mile on fuel (a middle estimate), you need to drive 187,500 miles to break even on that $15,000 difference. For someone who drives 12,000 miles per year, that is about 15.6 years. For someone who drives 15,000 miles per year, it is about 12.5 years. For someone who drives 20,000 miles per year, it is about 9.4 years. These timelines assume you keep the car that long and that electricity and gas prices stay roughly where they are.

Federal tax credits reduce this gap significantly. A credit of $7,500 (the current maximum, though it varies by vehicle and income) cuts the effective purchase price difference to $7,500, which you recover in about 6 to 9 years at typical driving rates. Some states offer additional rebates of $1,000 to $5,000, which shrink the payback period further. Check your state's incentive programs and the current federal rules on fueleconomy.gov, because both change year to year.

Maintenance costs are significantly lower for electric cars

Electric cars have far fewer moving parts than gas cars. They have no engine oil, no transmission fluid, no spark plugs, no timing belts, and no catalytic converters. They also have regenerative braking, which means the electric motor slows the car down most of the time, so brake pads last much longer — often 100,000 to 200,000 miles instead of 25,000 to 70,000 miles. This alone saves hundreds of dollars over the life of the car.

Studies comparing lifetime maintenance costs show electric cars cost about 40 percent less to maintain than gas cars over the same mileage. For a car driven 150,000 miles, that can mean $4,000 to $6,000 in savings. The main maintenance tasks for an electric car are tire rotation, cabin air filter replacement, and battery cooling system checks — all routine and inexpensive. These savings should be added to your fuel savings when calculating total ownership cost.

The one major uncertainty is battery replacement. Most electric car batteries are warrantied for 8 to 10 years or 100,000 to 150,000 miles, and most retain 80 to 90 percent of their capacity at the end of that period. A full battery replacement costs $5,000 to $15,000 depending on the car, but most owners never need one during the time they own the vehicle. If you keep an electric car for 10 years or 150,000 miles, battery replacement is unlikely, and the warranty usually covers it anyway.

Where you charge matters for total cost

Charging at home on a standard 120-volt outlet is slow (adding 2 to 3 miles of range per hour) but cheap, because you use your home electricity rate. Charging at a Level 2 charger (240 volts) at home or at a public station is faster (adding 25 to 30 miles per hour) and still uses your local electricity rate or a public charging network's rate. Charging at a DC fast charger on a road trip is the fastest (adding 150 to 200 miles in 20 to 30 minutes) but costs more per kWh — typically $0.20 to $0.35 per kWh, which raises your per-mile cost closer to gas car levels.

If you charge mostly at home, your per-mile cost stays low and the fuel savings remain substantial. If you rely on public fast chargers for most of your driving, your savings shrink significantly. Most electric car owners charge at home overnight and use public chargers only for road trips, which keeps the average cost low. This charging pattern is why home charging access is one of the biggest factors in whether an electric car makes financial sense for you.

Regional differences in electricity and gas prices

The savings from an electric car vary dramatically by state. In a state like Louisiana with cheap electricity ($0.08 per kWh) and average gas prices, an electric car's per-mile cost might be $0.025, compared to $0.12 for a gas car — a 79 percent savings. In Hawaii with expensive electricity ($0.18 per kWh) and expensive gas ($4.50 per gallon), an electric car might cost $0.045 per mile and a gas car $0.13 per mile — a 65 percent savings, but the absolute difference is smaller.

Gas prices also fluctuate with global oil markets, which means the per-mile cost for a gas car can swing wildly. When gas is $2 per gallon, the per-mile cost for a 25-mpg car is $0.08. When gas is $5 per gallon, it is $0.20. Electricity rates are more stable month to month, which means electric cars become more attractive when gas prices spike and less attractive when they drop. Over a 10-year ownership period, this stability works in the electric car's favor.

Tax credits and incentives that reduce the purchase price

The federal tax credit for electric vehicles is currently up to $7,500 for new cars and up to $4,000 for used electric cars, though the rules change frequently and depend on the vehicle's price, where it was assembled, and your household income. You claim this credit on your federal tax return, so you need a tax liability of at least $7,500 to use the full amount. Some states offer additional credits or rebates: California offers up to $2,000 for used electric cars, Colorado offers $5,000 for new cars, and several other states have programs. A few utilities also offer rebates for home charging installation.

These incentives reduce the effective purchase price gap, which shortens the payback period significantly. If you may have access to for a $7,500 federal credit and a $2,000 state rebate, the $15,000 price difference becomes $5,500, which you recover in about 4 to 6 years at typical driving rates. Check the current rules on fueleconomy.gov and your state's energy office website, because may be able to access and amounts change annually and depend on factors like vehicle assembly location and your income level.

Frequently Asked Questions

Is an electric car cheaper if I drive very few miles per year?

Probably not. If you drive fewer than 8,000 to 10,000 miles per year, the fuel savings may not recover the higher purchase price before the car ages out or you sell it. Electric cars make the most financial sense for people who drive 12,000 to 20,000 miles per year and keep the car for at least 5 to 7 years.

What if I can't charge at home?

Charging at public Level 2 stations costs more per kWh than home charging, which reduces your savings. DC fast chargers cost even more. If you rely entirely on public charging, your per-mile cost rises closer to gas car levels, and the financial advantage shrinks or disappears. Home charging access is a major factor in whether an electric car makes financial sense for you.

Do electric cars cost more to insure?

Insurance rates vary by insurer and vehicle, but electric cars often cost slightly more to insure than comparable gas cars because repair costs are higher when damage occurs (specialized parts and technicians). The difference is usually $100 to $300 per year. This cost should be factored into your total ownership calculation.

What happens to the savings if gas prices drop?

Lower gas prices narrow the per-mile savings from an electric car, but do not eliminate them. Even when gas is $2 per gallon, electricity is still cheaper per mile in most states. The payback period lengthens, but the long-term savings remain positive for most owners.

Can I use the federal tax credit if I lease instead of buy?

The federal tax credit applies to the purchase of a new electric car, not to leasing. However, leasing companies can use the credit, which sometimes lowers lease payments. Some states offer separate incentives for leasing. Check with dealers and your state's energy office for current leasing incentives.