Data Notice: Figures and statistics cited in this article are drawn from the best available data at writing and may include approximations or projections. Check official sources to confirm current data before deciding.

EV vs Gas Total Cost Calculator 2026: Compare Fuel, Savings & Break-Even

How We Evaluated: Our editorial team built this calculator using fuel-economy benchmarks from fueleconomy.gov, electricity rate data from the U.S. Energy Information Administration, and maintenance cost estimates from the U.S. Department of Energy’s Alternative Fuels Data Center. Last updated: March 2026. See our editorial policy for full methodology.

The sticker price of an electric vehicle almost always looks higher than a comparable gas car. But sticker price is not the full story. Fuel costs, maintenance savings, and federal tax credits can flip the math entirely — sometimes within the first two or three years of ownership. This calculator lets you plug in your own numbers and see the real picture.

Enter your details below, hit Calculate, and the tool will show you annual fuel costs for both drivetrains, your projected 5-year savings, and exactly when the EV pays for itself.

Worked Example: 2026 Toyota Camry vs Tesla Model 3

To show how the calculator works, here is a side-by-side comparison using real-world numbers:

Results:

• Gas annual fuel cost: 12,000 / 32 x $3.50 = $1,312.50
• EV annual fuel cost: 12,000 / 3.8 x $0.16 = $505.26
• Annual fuel savings: $807.24
• Monthly fuel savings: $67.27
• 5-year fuel savings: $4,036.20
• Price difference: $8,990
• Break-even year: ~11.1 years on fuel alone

But factor in the $7,500 federal EV tax credit and the gap drops to $1,490 — putting break-even at just ~1.8 years. Add ~$1,000/year in lower maintenance costs (no oil changes, fewer brake jobs) and the EV wins within the first year.

Understanding kWh vs MPG

Miles per gallon (MPG) measures how far a gas car travels on one gallon of fuel. Electric vehicles use a different metric: miles per kilowatt-hour (miles/kWh), which tells you how far the car goes on one kWh of electricity. The EPA also reports an inverse figure — kWh per 100 miles — on window stickers.

A typical gas car gets 25-35 MPG. A typical EV gets 3.0-4.5 miles per kWh (roughly equivalent to 75-130 MPGe). That efficiency advantage is why EVs cost so much less to “fuel” even though electricity is not free.

The key conversion: one gallon of gas contains about 33.7 kWh of energy. An internal combustion engine wastes roughly 70-80% of that energy as heat. An electric motor converts 85-90% of electrical energy into motion. That thermodynamic gap is the single biggest reason EVs are cheaper to run, according to the Department of Energy’s Alternative Fuels Data Center.

Home Charging vs Public Charging: The Cost Gap

Where you charge determines how much you actually pay per kWh — and the difference is dramatic.

Home charging (Level 2): The national average residential electricity rate is approximately $0.16/kWh (EIA, 2025). At that rate, driving 12,000 miles per year in a 3.5 miles/kWh EV costs roughly $549 — less than $46 per month. If you have solar panels or a time-of-use plan with off-peak rates around $0.08-0.10/kWh, the cost drops even further.

Public DC fast charging: Public chargers from networks like Electrify America, ChargePoint, and Tesla Superchargers typically charge $0.35-0.50/kWh. At $0.40/kWh, that same 12,000 miles costs $1,371 per year — still less than gas, but almost three times the home-charging cost.

The takeaway: if you can charge at home, an EV’s fuel cost advantage is overwhelming. If you rely entirely on public fast charging, the savings shrink but usually remain positive versus gasoline. Most EV owners charge 80-90% at home or at work, according to data from fueleconomy.gov.

The $7,500 Federal EV Tax Credit (2026)

The Inflation Reduction Act’s clean vehicle credit offers up to $7,500 for qualifying new EVs and up to $4,000 for qualifying used EVs. Key eligibility rules for 2026:

• New vehicles must have a final assembly in North America, meet critical mineral and battery component requirements, and have an MSRP under $55,000 (cars) or $80,000 (SUVs/trucks).
• Buyer income limits: $150,000 AGI (single), $300,000 (joint).
• Point-of-sale transfer: Since 2024, buyers can transfer the credit directly to the dealer, reducing the price at purchase rather than waiting for a tax refund.

This credit does not appear in the calculator by default because eligibility varies by model and buyer income. But when it applies, it slashes the EV’s effective purchase price and can cut the break-even period by half or more. Check fueleconomy.gov’s tax credit tool for model-by-model eligibility.

Maintenance Savings: The Hidden EV Advantage

Fuel is not the only place EVs save money. According to the U.S. Department of Energy, battery electric vehicles cost approximately $0.06 per mile in maintenance, compared to $0.10 per mile for gas cars — a difference of roughly $1,000 per year for a 12,000-mile driver.

Why the gap? EVs have no engine oil to change, no transmission fluid, no timing belts, and regenerative braking means brake pads last two to three times longer. The main maintenance items on an EV are tire rotations, cabin air filters, and eventually battery coolant.

Over five years, that adds up to an estimated ~$5,000 in additional savings beyond fuel — a factor many buyers overlook when comparing sticker prices.

How to Read Your Results

• Annual fuel cost tells you the running cost of each drivetrain based on your driving habits and local fuel/electricity prices.
• 5-year fuel savings shows the cumulative difference — this is the money that stays in your pocket.
• Break-even year is the point at which the EV’s lower running costs have offset its higher purchase price. A break-even under 5 years generally means the EV is the better financial choice.
• 5-year total cost of ownership (TCO) combines the purchase price with five years of fuel. This is the headline number for comparing the two options on equal footing.

Remember that the calculator focuses on fuel and purchase price. Real-world TCO also includes insurance (EVs can be 10-15% more to insure), depreciation, maintenance savings, and any applicable tax credits.

Frequently Asked Questions

How accurate is this calculator? The tool uses straightforward arithmetic: miles driven, fuel economy, and fuel price. It does not model fluctuating gas/electricity prices, degradation of battery range, or changes in driving patterns. Use it as a strong starting estimate, then refine with quotes from your local utility and gas stations.

Should I include the EV tax credit in the purchase price? If you know you qualify, subtract $7,500 (new) or $4,000 (used) from the EV purchase price before entering it. The calculator will then reflect the credit in the break-even and TCO numbers.

What about plug-in hybrids (PHEVs)? PHEVs split driving between electric and gas. This calculator is designed for a pure EV-vs-gas comparison. For PHEV analysis, see our EV vs Hybrid vs Gas guide.

Does electricity cost the same everywhere? No. Rates range from ~$0.10/kWh in states like Louisiana and Idaho to ~$0.30/kWh in California and Connecticut. Enter your actual rate (check your electric bill) for the most accurate result.

What if I drive more than 12,000 miles per year? Higher mileage magnifies the EV’s fuel cost advantage. A driver doing 20,000 miles per year saves roughly 67% more per year than a 12,000-mile driver, and the break-even arrives proportionally sooner.

Related Guides

• EV vs Hybrid vs Gas: Total Cost Comparison 2026
• EV Charging Guide: Home & Public Costs
• Best Affordable EVs 2026