EV vs Gas Car Savings Calculator

Understanding the EV vs Gas Decision

Deciding between an electric vehicle and a conventional gasoline car involves more than just comparing purchase prices. The true cost of vehicle ownership includes fuel expenses, maintenance, repairs, insurance, and depreciation over several years. This calculator provides a comprehensive total cost of ownership comparison over a customizable ownership period, typically five years, to help you make an informed financial and environmental decision.

Electric vehicles have lower fuel costs because electricity is cheaper than gasoline on a per-mile basis, and EVs require less maintenance since they have fewer moving parts, no oil changes, and regenerative braking that extends brake pad life. However, EVs generally have a higher upfront purchase price, though federal tax credits and state incentives can significantly narrow this gap.

The environmental comparison is also important. While EVs produce zero tailpipe emissions, the electricity used to charge them comes from a grid that still includes fossil fuels. Even accounting for grid emissions, EVs typically produce fewer total greenhouse gas emissions than comparable gasoline vehicles over their lifetime, and the gap widens as the grid becomes cleaner with more renewable energy.

Gasoline vehicles, on the other hand, produce tailpipe emissions that contribute directly to local air pollution and greenhouse gas concentrations. A typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year, which adds up significantly over the vehicle's lifetime. Beyond carbon dioxide, gasoline vehicles also emit nitrogen oxides, particulate matter, and volatile organic compounds that contribute to smog formation and respiratory health problems, particularly in urban areas with high traffic density. [epa-ghg-vehicle]

How to Use This Calculator

Using the EV vs Gas savings calculator requires entering details about your driving habits, the vehicles you are comparing, and local fuel and electricity costs. Start by entering your annual miles driven. The US average is about 12,000 miles per year, but your actual mileage may vary based on your commute, road trips, and daily driving needs.

Enter the fuel economy of the gas vehicle you are comparing in miles per gallon. The average new gas car gets about 25 MPG combined, but fuel-efficient compact cars can achieve 35 MPG or more, while trucks and SUVs may get 15 to 20 MPG. For accurate results, use the combined city-highway MPG value from the vehicle's window sticker or fueleconomy.gov.

Specify your local gas price per gallon and your electricity rate in cents per kilowatt-hour. Electricity rates vary widely by region, from under 10 cents per kWh in some states to over 30 cents per kWh in others. Your actual gas price also depends on your location and current market conditions. Both values significantly affect the comparison.

Enter the EV efficiency in kilowatt-hours per 100 miles. Most modern EVs range from 25 to 40 kWh per 100 miles. A Tesla Model 3 achieves about 26 kWh per 100 miles, while a Ford F-150 Lightning uses about 45 kWh per 100 miles. For reference, fueleconomy.gov lists official efficiency ratings for all EVs sold in the US.

Enter the purchase prices for both vehicles. Include any available federal tax credits and state incentives in the EV purchase price calculation. The federal tax credit can be up to $7,500 for qualifying EVs. Some states offer additional rebates of $1,000 to $5,000.

Finally, enter your expected annual maintenance costs. Gas vehicles typically cost $800 to $1,200 per year in maintenance, while EVs average $400 to $600 per year due to fewer fluids and moving parts. The calculator uses defaults of $950 for gas and $500 for EV based on industry averages. Note that EV tires may wear faster due to the higher weight and instant torque of electric drivetrains, so tire replacement costs can be somewhat higher for EVs than for comparable gas vehicles. [doe-ev-benefits]

How Total Cost of Ownership Is Calculated

The total cost of ownership calculation compares five-year costs across three main categories: purchase price, fuel, and maintenance. The formula for annual fuel cost depends on the vehicle type.

For a gasoline vehicle:

For an electric vehicle:

The five-year total cost of ownership for each vehicle sums the purchase price, annual fuel costs, annual maintenance costs, and annual tire costs over the ownership period. The savings are the difference between the gas and EV totals.

The CO₂ emissions calculation uses the EPA standard of 8,887 grams of CO₂ per gallon of gasoline burned and the EIA average US grid emission factor of 0.37 kg of CO₂ per kilowatt-hour. Actual EV emissions vary by region based on the local grid mix. [epa-ghg-vehicle] [eia-electricity-co2]

For more information, see the Fuel Cost Calculator.

Cost Comparison Reference

Tips for EV Buyers

Research available federal and state incentives before purchasing. The federal clean vehicle tax credit can save up to $7,500 on qualifying new EVs, and some states like California, Colorado, and New York offer additional rebates of $1,000 to $5,000. Some utilities also offer special EV electricity rates that provide lower per-kWh costs for charging during off-peak hours, which can further reduce your fuel costs and improve the overall savings picture.

Consider home charging installation costs when budgeting for an EV. A Level 2 home charger typically costs $400 to $1,200 for the equipment plus $500 to $2,000 for installation, depending on your home's electrical panel capacity and wiring requirements. Some states and utilities offer rebates that offset part of this cost.

If you cannot install a home charger, factor in public charging costs, which are typically higher than home electricity rates. DC fast charging can cost $0.30 to $0.50 per kWh, significantly reducing fuel savings compared to home charging.

Compare total cost of ownership rather than just monthly payments. While an EV may have a higher monthly payment, the lower fuel and maintenance costs can result in lower total monthly transportation expenses. Use this calculator with your actual numbers to make a fair comparison. Remember that the specific makes and models being compared matter too — some EVs are more efficient than others, and some gas vehicles retain value better. Looking at the total cost picture rather than any single factor will give you the clearest answer for your particular situation. If you drive mostly in stop-and-go city traffic, an EV's regenerative braking provides even greater efficiency advantages over a gas car, while highway-heavy drivers may find the gap narrower.

Limitations

• Grid Variation: The EV CO₂ calculation uses the US average grid emission factor. Your actual EV emissions depend on your local utility's energy mix. In regions with mostly renewable or nuclear energy, EV emissions are much lower. In coal-heavy regions, they are higher.
• No Tax Credits: The calculator does not automatically apply tax credits to the EV purchase price. Adjust the EV purchase price manually to reflect any federal or state incentives you qualify for.
• No Depreciation: Resale value is not included in the comparison. EV depreciation varies by model and is influenced by battery degradation, technology improvements, and market demand.
• Simplified Maintenance: Maintenance costs are estimated averages. Actual costs depend on the specific make and model, driving conditions, and local labor rates.
• Charging Costs: The calculator assumes all charging is at the specified electricity rate. If you use public fast charging frequently, your actual EV fuel cost will be higher.
• Weather Effects: Cold weather reduces both gas and EV efficiency. EVs can lose 20% to 30% of their range in extreme cold, and gas vehicles also see reduced MPG in winter conditions.

Frequently Asked Questions

❓ Are EVs really cheaper to maintain than gas cars?

✅ Yes, EVs typically cost 40% to 60% less to maintain because they have fewer moving parts, no oil changes, no transmission, and regenerative braking that extends brake pad life. The average annual maintenance cost for an EV is about $500 compared to $950 for a gas vehicle.

❓ How much does it cost to charge an EV at home?

✅ At the US average electricity rate of 12 cents per kWh, charging a typical EV with a 60 kWh battery costs about $7.20 for a full charge, providing 200 to 300 miles of range. This is equivalent to paying about $0.03 to $0.04 per mile, compared to $0.10 to $0.15 per mile for a gas car at current fuel prices.

❓ Do EVs really produce fewer emissions than gas cars when accounting for grid electricity?

✅ Yes. Even on the average US grid, an EV produces about 1.33 tons of CO₂ per year compared to 4.27 tons for a gas sedan. As the grid incorporates more renewable energy, EV emissions will continue to decrease while gas car emissions remain constant per mile driven.

❓ How long does it take to recoup the higher purchase price of an EV?

✅ The payback period depends on your annual mileage, local fuel and electricity prices, and the price difference between vehicles. At 12,000 miles per year with average US prices, the payback period is about 5 to 7 years. Higher mileage and more expensive gas shorten the payback time.

❓ What happens to EV batteries at end of life?

✅ EV batteries typically last 10 to 20 years and are often repurposed for stationary energy storage after their automotive life. Most manufacturers offer 8-year or 100,000-mile battery warranties. Battery recycling technology is improving, and materials like lithium, cobalt, and nickel can be recovered.

❓ Does cold weather affect EV range and efficiency?

✅ Yes, cold weather can reduce EV range by 20% to 30% due to increased battery resistance and the energy needed to heat the cabin. Preconditioning the battery while plugged in and using seat heaters instead of cabin heat can mitigate some of this loss. Gas vehicles also lose some efficiency in cold weather.

❓ Are there special electricity rates for EV charging?

✅ Many utilities offer time-of-use rates that provide lower electricity prices during off-peak hours, typically overnight. These rates can reduce charging costs by 30% to 50% compared to standard residential rates. Check with your local utility about EV-specific rate plans.