We ran the math for three real driving profiles. Here is when EVs save you money — and when they don’t.

The honest answer to ‘should I go electric?’ depends on three numbers: your annual mileage, your home electricity rate, and how long you keep cars. Below we run total cost of ownership for three real households.

The model

We compare a $36,000 mid-size EV (3.6 mi/kWh, $80/yr maintenance) against a $32,000 mid-size gas car (32 MPG, $520/yr maintenance) over eight years of ownership. Insurance is held equal at $1,400/yr. Resale assumes 35% retention for both. You can plug your own numbers into the EV vs Petrol Cost Comparator.

Profile 1: The 14k-mile commuter, $0.14/kWh, $3.40/gal

EV TCO: $58,800. Gas TCO: $63,400. EV is $4,600 cheaper over 8 years and breaks even at year 4. Lifetime CO2 saved: roughly 28 tons.

Profile 2: The 7k-mile city driver, $0.22/kWh, $3.20/gal

EV TCO: $54,100. Gas TCO: $52,900. Gas wins by $1,200 because low mileage never gives the EV enough fuel savings to overcome the higher purchase price. The CO2 advantage still favors the EV.

Profile 3: The 22k-mile rural driver, $0.11/kWh, $3.60/gal

EV TCO: $66,200. Gas TCO: $76,100. EV wins by $9,900 and breaks even at year 2.5. This is the profile where EVs absolutely dominate.

What actually moves the needle

• Annual miles: above 12,000 mi/yr, EVs almost always win on cost.
• Home charging: paying public DC fast-charging rates can erase the EV advantage entirely.
• Fuel volatility: every $0.50 increase in gas prices shifts the breakeven point one full year toward EVs.
• Federal tax credit: the $7,500 credit (when you qualify) often makes the purchase-price gap vanish.

Bottom line

If you drive more than the average American (around 13,500 mi/yr) and can charge at home overnight, an EV is almost always the cheaper car over an 8-year window. If you drive less than 8,000 mi/yr or rely on public charging, run the numbers carefully — the answer is no longer automatic.

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