EV vs Gasoline Car Lifetime Cost Comparison

Enter vehicle prices, annual mileage, expected ownership years, electricity and gasoline prices, and efficiency figures to compare the lifetime cost of an EV versus a gasoline car and find the break-even point.

What Is the EV vs Gasoline Car Lifetime Cost Comparison?

EVs (electric vehicles) usually cost more to buy than an equivalent gasoline car, but the energy cost per kilometer tends to be lower with electricity. This tool estimates how many years of ownership it takes for the savings on energy costs and tax incentives to offset that upfront price difference — in other words, the break-even point.

The estimate assumes the electricity price, gasoline price, and efficiency figures you enter stay constant for the whole ownership period. In reality, energy prices fluctuate, and an EV's efficiency can gradually decline as the battery ages. Treat the number of years shown here as a rough guide based on today's conditions, not a forecast that accounts for future price changes.

How to Estimate EV vs Gasoline Car Lifetime Cost

Enter the price of each vehicle Enter the price of the EV and the gasoline car you want to compare (ideally the actual price after any dealer discounts).
Enter annual mileage and expected ownership years Enter how far you expect to drive each year (commuting, errands, etc.) and how many years you plan to keep the car before replacing it.
Enter the electricity price and gasoline price Enter the price per kWh from your electricity plan and the price per liter of the gasoline you typically buy.
Enter EV efficiency and gasoline car efficiency Enter the distance covered per kWh or per liter, based on catalog figures or your actual driving experience.
Enter the tax discount and check the result Optionally enter the annual vehicle tax discount for the EV, then review the break-even point and total cost chart for the ownership period.

Tips for getting more out of it

A larger price gap between the two vehicles takes longer to recover, so it helps to re-run the calculation with a net price after subsidies (like EV purchase incentives) and negotiated discounts.
Catalog efficiency figures often differ from real-world driving conditions (city vs. highway ratio, temperature), so it is safer to use conservative estimates.
Vehicle tax and eco-friendly tax discounts vary by model year and municipality, so check the exact amount using the sister vehicle tax and environmental performance tax calculators.
The higher your annual mileage, the more the EV energy cost advantage compounds, which shortens the break-even period.
Setting a longer expected ownership period increases the chance of recovering the price difference.

When to Use This EV vs Gasoline Car Comparison

Considering a second car

A second car used mainly for short trips or errands may not drive enough miles for the EV's energy cost advantage to matter much. Enter your realistic mileage to see the actual break-even period.

Evaluating an EV switch for a company fleet

Fleet vehicles that rack up high mileage tend to see the EV energy savings add up faster, making the switch more attractive. Run the numbers per vehicle to support a fleet-wide decision.

Factoring in EV purchase subsidies

If you qualify for a national or local EV purchase subsidy, subtract that amount from the EV price beforehand to see the effective break-even period after the subsidy.

Comparing against a different electricity plan

Re-enter the price under a cheaper off-peak electricity plan to see how much shorter the break-even period becomes if you time your charging accordingly.

Deciding on a long-term ownership plan

Set a longer expected ownership period and check whether the break-even point falls within it — a useful test for whether an EV pays off if you plan to keep the car for many years.

EV vs Gasoline Car Comparison Terms

Break-even point: The number of years it takes for the combined energy cost savings and tax discount to exactly offset the EV's higher purchase price. If this is shorter than your expected ownership period, the price difference pays for itself while you own the car.
EV efficiency: A measure of how far an EV can travel per kWh of electricity (km/kWh). It is the EV equivalent of a gasoline car's fuel efficiency (km/L) — the higher the number, the farther you travel per unit of electricity cost.
Lifetime cost: The total cost of owning a vehicle, combining the purchase price with the energy costs and taxes incurred over the ownership period. It compares vehicles on total cost of ownership, not just sticker price.
Environmental performance tax (環境性能割): A Japanese tax levied when acquiring a vehicle, with a lower rate for vehicles with better fuel efficiency. Many EVs are exempt or taxed at a reduced rate.
CEV subsidy (CEV補助金): A Japanese government subsidy for purchasers of clean energy vehicles such as EVs. Local governments sometimes offer additional subsidies on top of the national one.
Annual energy cost: The yearly cost of electricity or gasoline, calculated by dividing annual mileage by efficiency and multiplying by the electricity or gasoline unit price.

Frequently Asked Questions

It depends on the price difference, mileage, electricity and gasoline prices, and ownership period, so there is no single answer. Enter your actual conditions into this tool to see whether the price difference can be recovered within your expected ownership period.

This happens when the combined annual savings from energy costs and tax discounts is zero or negative — for example, if electricity isn't sufficiently cheaper than gasoline, or your mileage is too low for meaningful annual savings.

The exact amount varies by model, model year, and municipality, so we recommend checking it individually using the sister vehicle tax and environmental performance tax calculator pages.

No, subsidies are not included. If you are eligible for a national or local EV purchase subsidy, subtract that amount from the EV price beforehand for a more realistic estimate.

Catalog figures are often measured under conditions that differ from real-world use, and real efficiency tends to drop with city driving or winter heater use. Where possible, use figures closer to your actual driving experience.

Side Note — EV Value Goes Beyond Just "Breaking Even"

EVs typically cost more upfront than gasoline cars, but their per-kilometer energy cost tends to be lower, so the longer you keep one, the more likely you are to recover the price difference. This "years to break even" idea is the same kind of calculation used when deciding whether to install solar panels or switch to an all-electric home: weighing an upfront investment against ongoing savings.

That said, a simple break-even calculation like this one does not account for future changes in electricity or gasoline prices, the upfront cost of installing a home charger, or the gradual loss of range from battery degradation over time. This tool only offers a rough estimate based on today's prices and efficiency figures, so real-world decisions should also weigh your replacement cycle and charging environment.

Beyond the numbers, EVs offer benefits that are hard to put a price on, such as quieter driving, strong acceleration, and the ability to power appliances from the vehicle during a power outage. Treat the break-even comparison as just one piece of the decision, not the whole picture.

Browse all trivia