EV vs Gas TCO Calculator

Where EVs Win, Lose, and Break Even

Fuel: the reliable EV advantage

At national-average prices (16¢/kWh home electricity, $3.40 gas), a 3.3 mi/kWh EV costs about 4.8¢/mile versus 10.6¢ for a 32 mpg gas car — roughly $700/year saved at 12K miles. Time-of-use plans with overnight rates near 8–10¢ widen it further. The exception matters though: road-trip-heavy drivers using fast chargers at 45¢+/kWh pay gas-equivalent prices, and cold climates trim EV efficiency 20–30% in winter months.

Maintenance and the depreciation wildcard

EVs skip oil changes, transmission service, and most brake wear (regenerative braking), running about 6.5¢/mile in maintenance versus 10¢ for combustion (AAA figures) — worth ~$2,000 over five years. Depreciation cuts the other way: rapid EV price cuts and tech turnover pushed 5-year EV residuals below gas equivalents (roughly 48% retained vs 55%), with dramatic model-level variance. Buying a lightly used EV flips this liability into the single biggest TCO win available — someone else already ate the steep part of the curve.

The incentive layer

Purchase incentives have shifted from the federal level to a patchwork: the federal clean-vehicle credit ended for most purchases after September 2025, while state rebates ($1,000–7,500 in states like Colorado and Massachusetts), utility charger rebates, and off-peak charging plans persist. Enter your EV price after whatever applies to you — incentive assumptions are the most common way TCO comparisons quietly cheat.

5-year cost by driving profile: a reference grid

The EV-vs-gas verdict swings on how much and where you drive. This grid shows approximate 5-year fuel-plus-maintenance costs (excluding purchase price) at different annual mileages, for a 3.3 mi/kWh EV at 16¢/kWh vs a 32 mpg gas car at $3.40/gal.

The operating-cost advantage grows with mileage — high-mileage drivers recover an EV's price premium fastest. But this excludes purchase price and depreciation: a $6,000 sticker gap can flip the total-cost winner, and where you charge matters enormously. Home charging preserves this advantage; dependence on 45¢+/kWh fast charging erases most of it.

Common mistakes in EV-vs-gas comparisons

• Ignoring where you charge. Home charging at 12–16¢/kWh makes EV fuel a quarter of gasoline; fast-charging at 45–60¢ approaches gas-equivalent cost. It's the single biggest swing variable.
• Assuming the old federal tax credit. The federal clean-vehicle credit ended for most purchases after September 2025. Quotes citing it for a 2026 cash purchase are stale — enter your price after whatever incentive actually applies.
• Overlooking EV depreciation. Rapid EV price cuts pushed 5-year residuals below gas equivalents. Buying lightly used flips this liability into a win — someone else ate the steep depreciation.
• Forgetting winter range loss. Cold climates trim EV efficiency 20–30% in winter months, raising real-world charging cost above the sticker efficiency.

Where EVs win, lose, and break even

Fuel is the reliable EV advantage: at national-average prices, a 3.3 mi/kWh EV costs about 4.8¢ per mile versus 10.6¢ for a 32 mpg gas car — roughly $700 a year at 12,000 miles, more with time-of-use overnight rates. The exception is road-trip-heavy drivers on fast chargers, who pay gas-equivalent prices. Maintenance tilts EV too: no oil changes, no transmission service, minimal brake wear thanks to regenerative braking, running about 6.5¢ per mile versus 10¢ for combustion. Depreciation cuts the other way — rapid EV price cuts and tech turnover pushed 5-year residuals below gas equivalents, though buying a lightly used EV turns that liability into the single biggest total-cost win available. The incentive landscape has fragmented from the federal level to a patchwork of state rebates, utility charger credits, and off-peak charging plans, which is exactly why entering your price after applicable incentives — not a headline number — is the honest way to run the comparison.

The home-charging question that decides everything

Before comparing any EV to any gas car, answer one question: where will you charge? Home charging at 12–16¢/kWh makes EV "fuel" cost roughly a quarter of gasoline, and time-of-use overnight rates near 8–10¢ widen the gap further. But dependence on DC fast charging at 40–60¢/kWh erases most of that advantage, bringing per-mile energy cost close to gasoline. This single variable reshapes the entire total-cost comparison, which is why renters without reliable home charging are, financially speaking, shopping for a different product than homeowners with a garage outlet. A Level 2 home charger installs for $500–2,000 (often offset by utility rebates), and even a standard 120V outlet adds 3–5 miles of range per hour — genuinely enough for sub-40-mile daily commutes at zero installation cost. The apartment dweller relying on public fast chargers, meanwhile, may find the EV's operating-cost edge largely gone. The window sticker can't tell you any of this; your parking situation can. Answer the charging question honestly before the price comparison, because it swings the result more than any other single factor.

Frequently asked questions

Do EV batteries need replacement within 5 years?

Rarely — federal law mandates 8-year/100K-mile battery warranties, and fleet data shows average degradation around 1.8–2%/year. Five-year TCO comparisons legitimately exclude battery replacement; 12-year-plus ownership is where the question gets real (current replacement costs $5K–15K, falling).

Why is EV insurance higher?

Higher repair costs — battery-adjacent damage often totals cars that would be repairable as gas vehicles, and certified EV repair capacity is still catching up. The gap averages $30–60/month and has been narrowing as repair networks mature.

What about home charger installation costs?

Level 2 installation runs $500–2,000 depending on panel capacity, offset by utility rebates in many territories. A standard 120V outlet adds ~3–5 miles of range per hour — genuinely sufficient for sub-40-mile daily commutes, and free to 'install.'

Do EV batteries need expensive replacement within 5 years?

Rarely — federal law mandates 8-year/100,000-mile battery warranties, and fleet data shows average degradation around 1.8–2% per year. Five-year comparisons legitimately exclude battery replacement. The question gets real only past 12 years; current replacement costs of $5,000–15,000 are falling as battery prices drop.

Why is EV insurance often higher than gas-car insurance?

Higher repair costs — battery-adjacent damage can total cars that would be repairable as gas vehicles, and certified EV repair capacity is still catching up. The gap averages $30–60 a month and has been narrowing as repair networks mature. Factor it in, but it rarely overturns the fuel-and-maintenance advantage.