Switching makes financial sense when the EV’s expected savings over your ownership period outweigh its extra purchase and financing costs, charging setup, and other ownership costs. The answer depends on your vehicle choices, local energy prices, mileage, and charging access—not a universal break-even mileage.
Start with the total cost, not the fuel bill alone
An electric vehicle can cost less to drive per mile and still cost more overall if its purchase price, financing, or charging installation erases the energy savings before you sell it. Compare the specific EV you might buy with the specific gasoline car you would otherwise choose, over the number of years you expect to own either vehicle.
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The key question is whether the EV’s cumulative savings—including energy and relevant ownership-cost differences—will exceed its additional costs during that period. A simple fuel-cost calculation is useful for screening a purchase, but it is not a complete ownership-cost analysis. A lower cost per mile does not by itself establish that switching cars will save money.
Calculate energy cost per mile for both vehicles
Use the price you actually pay for gasoline and electricity, along with each candidate vehicle’s efficiency. Keep units consistent: the formulas below yield dollars per mile when prices are in dollars and efficiency is expressed in miles per gallon or kilowatt-hours per 100 miles.
#1 Best Overall
- WORKS WITH EVERY NON-TESLA EV: Standard J1772 connector plugs straight into Ford, Chevrolet, Hyundai, Kia, Nissan, BMW, Volkswagen, Audi, Rivian, Lucid and every other EV or plug-in hybrid sold with a J1772 port - no adapter needed. Tesla drivers can charge too, using the J1772 adapter that comes with the car. The extra-long 25 ft cable easily reaches across a garage or driveway.
- HARDWIRED - PROFESSIONAL INSTALL: This Level 2 charger is hardwired (not plug-in), so a licensed electrician installs it per National Electrical Code. It delivers up to 48A on a dedicated 60A, 240V circuit - enough to charge most EVs fully overnight. Want more speed? You can set DIP switches 4 and 5 to unlock 50A on a dedicated 70A circuit. Before ordering, check your car's port type and that your electrical panel can support the circuit.
- CONTROL FROM YOUR PHONE: A stronger built-in antenna keeps the charger online even in a garage or basement. Use the free app to start and stop charging, set the charging speed (6-48A), get reminders, and track how much energy and money each charge uses. Requires a 2.4 GHz home WiFi network.
- SAFETY-CERTIFIED & WEATHERPROOF: Independently tested and certified (UL, ETL, FCC, Energy Star). A fully sealed IP66 / NEMA 4 housing stands up to rain, snow, heat and dust indoors or out, and internal steel shielding protects the electronics for years of reliable use.
- GLOW-IN-THE-DARK HOLSTER: The included high-visibility holster glows in the dark so you can find and dock the plug easily at night. Holds the connector securely when not in use.
- Gasoline cost per mile: local price per gallon ÷ gasoline car’s miles per gallon (MPG).
- EV electricity cost per mile: EV’s kilowatt-hours per 100 miles (kWh/100 miles) ÷ 100 × electricity price per kWh.
- Approximate annual energy savings: (gasoline cost per mile − EV electricity cost per mile) × annual miles driven.
For example, enter your own local pump price, electricity rate, and vehicle efficiency in these formulas rather than relying on a generic national savings figure. If the result is positive, the EV uses less money for energy under those assumptions; if it is negative, its energy costs more. This comparison isolates energy—it says nothing yet about purchase price, charging equipment, financing, or other costs.
Use mileage and driving patterns you can defend
Annual distance has a direct effect on the energy-cost difference: the per-mile gap is multiplied by the miles you actually expect to drive. Use a realistic estimate based on your current routine and likely changes, not an optimistic mileage assumption chosen to make the EV look better. If you expect to change jobs, move, or drive substantially more or less, account for that in the ownership-period estimate.
Separate routine local driving from occasional longer trips when they involve different energy costs or charging patterns. Include ordinary weekly mileage and less-frequent trips in the annual total. The Department of Energy’s Vehicle Cost Calculator asks about daily distance, driving days and weeks, highway share, and other annual trips; those inputs help reflect a driving pattern instead of treating every mile as identical.
For an EV, think through where the car will charge during those miles. A calculation based entirely on home electricity may not represent a driver who expects to rely regularly on paid public charging. For a plug-in hybrid, the share of distance driven on electricity depends in part on how often it is charged and whether trips fit within its electric range.
Rank #2
- Charge with Confidence: ChargePoint builds reliable, flexible EV charging stations for home, business, and fleets. Get 24/7 support and access to hundreds of thousands of North American charging locations.
- Charge Smart: With the user-friendly ChargePoint Mobile App, you can control your electric car charger, manage reminders, connect to smart home devices, find stations, get data and charging info, and access the latest features. Note: WiFi is needed for certain functionalities and troubleshooting steps if connectivity issues arise.
- Vast Network: Wherever you go, ChargePoint’s network includes 274k+ stations across North America and Europe and 565k+ roaming partner stations.
- Safe & Durable: Rely on this UL-certified EV charger for safe home charging. It can be installed indoors or outdoors by an electrician and includes a cold-resistant cable.
- Fast & Powerful: This EV charger charges 9× faster than a 120V outlet, delivering up to 45 mi/hr., dependent upon your vehicle. It features a J1772 connector for all non-Tesla EVs and requires a 20A or 80A circuit. For Tesla EVs, this will require an adapter.
Include the costs that can erase energy savings
Compare the actual purchase prices of the two vehicles, not just their advertised fuel economies. Include expected financing costs and the length of time you plan to keep the car. The relevant amount is the difference between the alternatives available to you, rather than an assumed premium that may not match your quotes.
Add the cost of home charging equipment and installation if you need them. The AFDC cost-calculator methodology excludes charging-system purchase and installation; it notes that these costs vary with electrical service and incentives. A driver who can charge without installing equipment has a different calculation from one who needs electrical work or a dedicated charging station.
Then compare other ownership costs that matter to your choice, such as maintenance and resale value. Do not assume a particular maintenance saving or resale outcome without vehicle-specific evidence. A total-cost comparison should use the same ownership period and include the costs and values that are relevant to both vehicles.
A rough screening estimate of payback time is:
(EV’s extra upfront cost + necessary charging setup cost) ÷ annual net savings.
Rank #3
- WORKS WITH EVERY NON-TESLA EV: Standard J1772 connector plugs straight into Ford, Chevrolet, Hyundai, Kia, Nissan, BMW, Volkswagen, Audi, Rivian, Lucid and every other EV or plug-in hybrid sold with a J1772 port - no adapter needed. Tesla drivers can charge too, using the J1772 adapter that comes with the car.
- PLUG IN, NO HARDWIRING: Level 2 charger delivers up to 40A to fully charge most EVs overnight. Plugs into a 240V, 4-prong NEMA 14-50 outlet (the RV/range type - NOT a dryer outlet) on a dedicated 50A circuit. The extra-long 25 ft cable easily reaches across a garage or driveway. Before ordering, check your car's port type and that you have the right outlet.
- CONTROL & SAVE FROM YOUR PHONE: A stronger built-in antenna keeps the charger online even in a garage or basement. Use the free app to start/stop charging, set speed (6-40A), get reminders, and track energy use and cost. Schedule off-peak overnight charging to cut your electric bill. Requires 2.4 GHz WiFi.
- SAFETY-CERTIFIED & WEATHERPROOF: Independently tested and certified (UL, ETL, FCC, Energy Star). A fully sealed IP66 / NEMA 4 housing stands up to rain, snow, heat and dust indoors or out, and internal steel shielding protects the electronics for years of reliable use.
- GLOW-IN-THE-DARK HOLSTER: The included high-visibility holster glows in the dark so you can find and dock the plug easily at night. Holds the connector securely when not in use.
Here, annual net savings should reflect more than energy if you have reliable estimates for other annual cost differences. This ratio is only a first-pass screen: it omits changing energy prices, financing effects, resale value, and other ownership costs unless you explicitly include them. It also becomes unhelpful if annual net savings are zero or negative. Use a full ownership-cost comparison before making a purchase decision.
Use the rate you will actually pay to charge
Electricity cost depends on the price per kWh where and when you charge. A residential rate is not a sound assumption for every driver: regular public charging may have a different price, and a utility time-of-use rate or EV charging plan may change the cost of home charging. Enter the applicable rate for your location and charging routine rather than assuming all electricity has the same price.
Charging access also changes which vehicle is practical. If home or workplace charging is available, it may be easier to use electricity for routine trips; if it is not, assess the public charging options you would actually use and their cost. The available calculator methodology does not include charger purchase or installation, so add those amounts separately when they apply. Verify vehicle-to-charger compatibility, household electrical capacity, installation requirements, and total installed cost before treating home charging as a low-cost assumption.
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Battery-electric vehicle (BEV)
A BEV runs on electricity drawn from the grid or another off-board power source. Its energy-cost estimate uses electricity consumption and the rates at the places where you expect to charge. It is most important to model the actual charging mix if home charging will not cover all of your use.
Rank #4
- Charge with Confidence: ChargePoint builds reliable, flexible EV charging stations for home, business, and fleets. Get 24/7 support and access to hundreds of thousands of North American charging locations
- Charge Smart: With the user-friendly ChargePoint Mobile App, you can control your electric car charger, manage reminders, connect to smart home devices, find stations, get data and charging info, and access the latest features
- Vast Network: Wherever you go, ChargePoint’s network includes 274k+ stations across North America and Europe and 565k+ roaming partner stations
- Safe & Durable: Rely on this UL-certified EV charger for safe home charging. It can be installed indoors or outdoors by an electrician and includes a cold-resistant cable
- Fast & Powerful: This EV charger charges 9× faster than a 120V outlet, delivering up to 45 mi/hr., dependent upon your vehicle. It features a J1772 connector for all non-Tesla EVs and plugs into a 240V outlet with a 14-50 receptacle, requiring a 40A or 50A circuit. For Tesla EVs, this will require an adapter
Plug-in hybrid electric vehicle (PHEV)
A PHEV can use grid electricity and liquid fuel. Its potential fuel savings depend on how often you charge and how many miles you drive within its electric range. The AFDC methodology models gasoline use when daily travel exceeds the available electric range, so a PHEV estimate should not assume that every mile is electric. It may suit a routine with electric-capable daily trips and longer journeys or limited charging access that make gasoline flexibility useful.
Conventional hybrid electric vehicle (HEV)
An HEV uses liquid fuel and a small battery that recovers braking energy; it is not charged from the grid. Compare its gasoline use with the other candidates, but do not treat it as a plug-in vehicle or calculate its energy cost using an EV electricity rate.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Compare candidates with the Department of Energy tools
The U.S. Department of Energy’s Alternative Fuels Data Center says its Vehicle Cost Calculator uses driving habits to calculate total cost of ownership and emissions for most vehicle makes and models, including alternative-fuel and advanced-technology vehicles. It allows custom vehicle entries and accepts purchase-price, fuel-economy or electricity-efficiency, energy-price, and driving-pattern inputs. The AFDC also provides a Local Fuel Savings Calculator for comparing EV or PHEV driving costs with a conventional vehicle where you live.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitches- Select the actual alternatives. Compare the EV with the gasoline vehicle you would otherwise buy. If neither entry matches your candidate, use custom vehicle information where needed.
- Enter current buyer-specific costs. Use purchase-price quotes and relevant financing assumptions, plus current local gasoline and electricity prices. Do not substitute an older example or national average for your own rates.
- Use each vehicle’s efficiency in the tool’s requested units. The AFDC calculator accepts gasoline fuel economy and EV efficiency in kWh per 100 miles. Check the model-year specification and trim that match the vehicle you are considering.
- Describe your driving. Enter daily distance, driving days and weeks, highway share, and other annual trips as accurately as possible. For a PHEV, reflect charging frequency and travel beyond electric range.
- Review ownership costs and assumptions. Add charging equipment and installation separately if needed, then assess maintenance, financing, and resale considerations that are not captured by a simple energy-cost calculation.
- Run more than one reasonable scenario. If mileage, charging mix, or rates could vary, compare plausible alternatives rather than relying on one best-case set of inputs.
Calculator results are only as reliable as their inputs. AFDC warns that vehicle prices and specifications change frequently and that not all data have been verified by DOE or the National Laboratory of the Rockies. Check current model-year information and your buyer-specific quote. The methodology page explains how costs are calculated, but its historical worked examples and older assumptions are not current local prices or present-day savings estimates.
Best Value
- WORKS WITH EVERY TESLA + OTHER EVs: Built-in Tesla-style plug (NACS standard) connects directly to Tesla Model S, 3, X and Y - and any EV with a NACS port - no adapter needed. The plug even has a button to pop open your Tesla’s charge port. Non-Tesla J1772 vehicles can charge with a NACS-to-J1772 adapter (not included). The extra-long 25 ft cable easily reaches across a garage or driveway.
- HARDWIRED - PROFESSIONAL INSTALL: This Level 2 charger is hardwired (not plug-in), so a licensed electrician installs it per National Electrical Code. It delivers up to 48A on a dedicated 60A, 240V circuit - enough to charge most EVs fully overnight. Want more speed? Your can set DIP switches 4 and 5 to unlock 50A on a dedicated 70A circuit. Before ordering, check your car’s port type and that your electrical panel can support the circuit.
- CONTROL FROM YOUR PHONE: A stronger built-in antenna keeps the charger online even in a garage or basement. Use the free app to start and stop charging, set the charging speed (6-48A), get reminders, and track how much energy and money each charge uses. Requires a 2.4 GHz home WiFi network.
- SAFETY-CERTIFIED & WEATHERPROOF: Independently tested and certified (UL, ETL, FCC, Energy Star). A fully sealed IP66 / NEMA 4 housing stands up to rain, snow, heat and dust indoors or out, and internal steel shielding protects the electronics for years of reliable use.
- GLOW-IN-THE-DARK HOLSTER: The included high-visibility holster glows in the dark so you can find and dock the plug easily at night. Holds the connector securely when not in use.
Decide whether the numbers fit your ownership horizon
Compare cumulative savings and costs over the period you expect to keep the vehicle. If the EV’s additional purchase, financing, and charging costs are recovered only after you expect to sell it, the energy savings may not make switching financially worthwhile for you. If a total-cost comparison shows a lower cost for the EV over that same period using defensible inputs, the switch may make sense on cost grounds.
Pay particular attention to the assumptions with the greatest effect on your result: the vehicle price difference, yearly mileage, local energy rates, charging mix, and ownership duration. Try more than one plausible value for assumptions you are unsure about. If a small change reverses which vehicle is less expensive, treat the decision as sensitive to those inputs instead of presenting the result as certain.
No current, nationally applicable EV-versus-gasoline fuel-cost figure can answer this decision for every buyer. The outcome is specific to your location, candidate vehicles, annual driving, charging access, and ownership plans. A transparent comparison with current local prices is more useful than a universal mileage threshold or an unqualified promise of savings.
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