Phase 3 · Sustainable Transitions
EV vs Gas Cost of Ownership
The sticker price is only the opening bid. Compare an EV and a gas car over the years you'll actually own them — fuel, maintenance and incentives included — and see which truly costs less.
Is an EV actually cheaper than a gas car over time?
Usually yes on running costs, but the upfront premium decides it. An EV costs roughly $0.046/mile in electricity at 3.5 mi/kWh and $0.16/kWh, against about $0.117/mile for a 30 mpg car at $3.50/gal, plus lower maintenance. Whether that gap repays the higher sticker price depends on how many miles and years you drive.
- Break-even = upfront price premium ÷ annual running savings, where the premium is the EV price minus any incentive, less the gas car price.
- Worked example (defaults on this page): 12,000 mi/yr for 7 years — the EV totals $46,700 against $49,360 for gas, so the EV is $2,660 cheaper all-in.
- Those defaults carry a $7,500 upfront premium after the incentive and save about $1,451/yr in running costs, so the EV breaks even at 5.2 years — drive fewer years than that and gas wins.
- Maintenance is modelled at $0.04/mi for an EV versus $0.09/mi for gas — no oil changes, exhaust or timing belts, and regenerative braking spares the pads.
Under the hood
The math, fully exposed
We total every dollar each car costs over your ownership period — purchase, fuel and upkeep:
Total miles = annual miles × years
EV fuel = (miles ÷ 3.5 mi/kWh) × electricity rate
Gas fuel = (miles ÷ 30 mpg) × gas price
Maintenance = $0.04/mi (EV) vs $0.09/mi (gas)
EV total = (price − incentive) + fuel + maintenance
Break-even = upfront price premium ÷ annual running savings
- Assumptions shown on purpose: 3.5 mi/kWh, 30 mpg and the maintenance rates are editable in spirit — swap your own vehicles' real figures mentally and the ranking still follows the same logic.
- Mileage is the multiplier: EVs save on the running cost, so the more you drive, the faster the upfront premium is repaid. Low-mileage drivers may never break even.
- Not modeled: insurance, registration, resale value and financing interest. Resale in particular varies widely by model and can move the answer.
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Answers
Frequently asked questions
Are electric cars actually cheaper than gas cars?
Often over the full ownership period, yes — but not always at the sticker. EVs usually cost more upfront and far less to run (cheaper "fuel" per mile and lower maintenance). Whether they win depends on how many miles you drive, your electricity vs gas prices, the purchase premium, and how long you keep the car. This calculator finds the exact break-even.
How much does charging an EV cost compared to filling a gas tank?
At 3.5 miles per kWh and $0.16/kWh, an EV costs about 4.6¢ per mile to "fuel". A 30 mpg gas car at $3.50/gal costs about 11.7¢ per mile — roughly 2.5× more. Home charging is the cheapest; relying on public DC fast charging narrows the gap considerably.
Do EVs really need less maintenance?
Generally yes. With no oil changes, no transmission, fewer moving parts and regenerative braking that spares the brake pads, EVs typically run lower routine maintenance — we model $0.04/mile versus $0.09/mile for gas. The big caveat is out-of-warranty battery or repair costs, which are rarer but expensive.
What is the EV tax credit?
Federal and some state incentives can reduce an EV's effective price by several thousand dollars — historically up to $7,500 federally for qualifying new vehicles, with income and sourcing rules. Because it comes straight off the purchase premium, the incentive is often what flips an EV from "more expensive" to "cheaper" over your hold.