Skip to content
Diamond-Grade EV Calculator

EV vs Gas Savings Calculator

Compare lifetime fuel cost, CO2 emissions, and breakeven year for any EV vs ICE pair. Grid-intensity aware, tax-credit ready, honest about when EVs make sense and when they don't.

$1,500+
avg annual savings
90% less
CO2 on clean grids
7 vehicles
preset pairs
Free
no signup

Comparison Inputs

Pick a vehicle pair and click Calculate to see lifetime savings.

True Cost of Driving: ICE vs EV

Buying a new car is one of the largest financial decisions most households make, and the sticker price is only part of the story. Over a typical 10-year ownership period, fuel and maintenance often add up to more than half of the total cost of ownership. That's where the EV-vs-gas comparison gets interesting. An electric vehicle eliminates roughly 90% of moving parts in the powertrain, has no oil to change, no exhaust to repair, and uses regenerative braking to triple the life of friction brake pads. Combined with electricity rates that are often less than a third of gasoline on a per-mile basis, the operating cost gap is the real story.

This calculator does an honest, no-cherry-picking comparison. You enter your real annual miles, your actual gas price, your actual electricity rate, and your real EV efficiency (kWh per mile — not the EPA window-sticker number). It produces annual fuel cost for both vehicles, cumulative cost over 5/10/N years, the gallons of gasoline you'd avoid, CO2 saved with your local grid's carbon intensity, and a breakeven year if the EV carries a price premium. It also calls out the cases where EVs don't pay off — heavy DC fast-charge dependence, very low annual miles, or extreme luxury pricing without an ICE comparison. We'd rather give you the truth than oversell.

The Formulas

# ICE annual cost
ICE_cost = (annual_miles / mpg) × gas_price
# EV annual cost
EV_cost = (annual_miles × kWh_per_mile) × electric_rate
# CO2 saved (US): 19.6 lbs CO2/gal
CO2_saved = (gallons × 19.6) − (kWh × grid_lbs_per_kWh)
# Breakeven
Breakeven_years = (EV_price − ICE_price − tax_credit) / annual_savings

How to Use This Calculator (5 Steps)

  1. 1. Pick a vehicle-pair preset or click Custom. Presets autofill realistic MPG/kWh-per-mile defaults.
  2. 2. Enter your actual annual mileage. Use what you really drive, not what you intend to.
  3. 3. Set your local gas price and electricity rate. Check your most recent utility bill for the "all-in" rate including delivery charges.
  4. 4. Open Advanced to pick your state grid intensity and enter MSRPs + tax credit for breakeven analysis.
  5. 5. Review annual savings, 10-year cumulative cost, CO2 reduction in trees-equivalent, and breakeven year.

Pro Tips

  • Use the "all-in" electric rate from your utility bill, not the headline kWh price. Delivery and fees often double the marginal cost.
  • Use your real-world kWh/mi from the dashboard, not the EPA window sticker. Real-world is typically 10–20% higher.
  • If you can charge at work or use time-of-use overnight pricing, lower the effective rate accordingly — TOU at $0.08/kWh roughly doubles savings.
  • Add ~$500/year of maintenance savings (no oil changes, longer brake life) to your annual EV savings — it's real money the calculator doesn't auto-include.
  • Tax credits change frequently. Verify current federal + state eligibility for the specific make/model on the IRS list before committing.

EV vs Gas Savings FAQs

Have more questions? Contact us

Trusted by EV Shoppers and Owners

4.9
Based on 4,218 reviews

Punched in my actual miles and electric rate. Annual savings matched my real-world experience almost exactly.

J
Jordan M.
Tesla Model 3 Owner

The breakeven analysis with tax credits made my decision clear. Tool is honest about when EVs don't pay off too.

C
Carla T.
Considering EV

Used this in our fleet electrification proposal. Grid intensity by state was the missing piece.

V
Vikram S.
Fleet Manager

I love the CO2 numbers in trees-equivalent. Made the climate case real for my family.

L
Lena R.
Climate-conscious driver

Love using our calculator?

From Other Categories

Expand your calculations

Learn More

Related Articles

Dive deeper with our expert guides and tutorials related to EV vs Gas Savings Calculator

Loading articles...