EV Savings Calculator | The Greener Electron

See how much an EV could save you on fuel. Enter your numbers below and the calculator estimates your annual fuel savings, five year savings, and how long an EV price premium takes to pay for itself. Every assumption is visible and editable, because honest math beats marketing math.

Your current car

Miles driven per year The US average is around 13,500. Use your odometer history or insurance estimate. Current car fuel economy (MPG) Combined rating. Check fueleconomy.gov or your dashboard average. Gas price ($ per gallon) Your local regular price. The US average is around $3.40.

The EV option

Home electricity price ($ per kWh) Find this on your electric bill. The US average is around $0.17 per kWh. EV efficiency (miles per kWh) Most new EVs rate 3 to 4 miles per kWh. Efficient models reach 4.5 or more. Share of charging at home (%) Home charging is usually the cheapest. Set this lower if you rely on public chargers. Public charging price ($ per kWh) DC fast charging often runs $0.40 to $0.60 per kWh. EV price premium ($) How much more the EV costs than the comparable gas car, after incentives. Enter 0 if the prices are equal.

Assumptions (tap to view and edit)

Annual fuel price increase (%) Applied equally to gas and electricity prices in the five year and payback math.

The payback search runs over a 10 year horizon. Maintenance savings are deliberately excluded from the math, so the fuel savings shown here are conservative. See the caveats below.

Your estimate

$0Gas fuel cost, per year

$0EV charging cost, per year

$0Saved per year, year 1

$0Fuel savings, 5 years

–Payback on price premium

Payback point10 year payback horizon

Before you decide

This is an estimate, not a quote. Your real costs depend on local gas and electricity prices, your driving mix, and the specific cars you compare.
Maintenance savings are not counted. EVs typically cost less to maintain (no oil changes, less brake wear), so your real total savings are often higher than the fuel-only number shown here.
Public fast charging costs more. If most of your miles come from public chargers, set the home charging share low and watch the savings shrink or disappear.
Rates vary a lot by place and plan. Time-of-use electricity plans, local gas taxes, and seasonal price swings can move both sides of the math.
Battery degradation is small but real. Expect a few percent of range loss over many years, which slightly raises your per-mile electricity cost over time.
This covers fuel only. Insurance, depreciation, and financing differ between cars and are not included here.