Example Data Table
| Input |
Gas Car |
Electric Car |
| Annual miles |
12,000 |
12,000 |
| Energy use |
30 MPG |
30 kWh per 100 miles |
| Energy price |
$3.75 per gallon |
$0.21 weighted per kWh |
| Purchase price |
$30,000 |
$38,000 |
| Annual maintenance |
$900 |
$500 |
| Annual insurance |
$1,400 |
$1,600 |
| Comparison period |
5 years |
5 years |
Formula Used
Gas fuel cost = (Annual miles ÷ MPG) × Gas price per gallon.
Weighted electricity rate = (Home rate × Home charging share) + (Public rate × Public charging share).
EV charging cost = (Annual miles × kWh per 100 miles ÷ 100 ÷ Charging efficiency) × Weighted electricity rate.
Annual operating cost = Energy cost + Maintenance + Insurance + Taxes and fees + Other yearly cost.
Resale value = Purchase price × (1 - Yearly depreciation rate)Years.
Total cost = Purchase price + Charger cost - Incentives + Total annual operating cost - Resale value.
Break-even years = EV upfront premium ÷ Annual EV savings.
How To Use This Calculator
Enter your annual miles, gas MPG, fuel price, EV efficiency, and electricity rates. Add purchase prices, incentives, charger cost, yearly maintenance, insurance, taxes, and other costs. Set the comparison period and depreciation rates. Press the calculate button. Review annual cost, total ownership cost, savings, and break-even years.
Understand Gas And Electric Car Costs
A gas vs electric car comparison is more than a fuel check. It should include purchase price, charging equipment, incentives, insurance, fees, maintenance, and resale value. Small differences can become large over many years. This calculator combines those pieces in one view. It helps you compare daily driving with long term ownership.
Why The Inputs Matter
Annual miles control most running costs. A high mileage driver may save more with an efficient electric car. A low mileage driver may need more time to recover a higher purchase price. Gas price and electricity rates also change the answer quickly. Public charging can cost more than home charging. That is why this tool separates home and public energy rates.
Maintenance also matters. Electric cars usually have fewer routine service items. They still need tires, filters, brakes, inspections, and repairs. Gas cars may need oil changes, plugs, belts, exhaust service, and more fluid care. Insurance and registration can also differ by model, value, location, and policy.
Total Ownership View
The calculator estimates annual operating cost first. Then it estimates total ownership cost for the selected years. It subtracts estimated resale value, so the final number is closer to real cost than purchase price alone. Depreciation is treated as a yearly percentage. Incentives reduce electric cost. Charger installation is added where needed.
Break-Even Meaning
Break-even years show how long it may take the electric option to overcome any upfront premium. If annual savings are small, break-even may be long. If annual savings are large, the payback may be fast. If the electric car costs less at the start, savings begin immediately.
Use Results Carefully
These estimates are planning numbers. Real costs depend on driving style, weather, tire choice, loan terms, repairs, fuel changes, and resale markets. Use local prices when possible. Update the inputs before buying. Compare similar vehicle sizes for a fair result. The best choice is the one with lower cost, enough range, and practical charging.
For a stronger estimate, run several cases. Test cheap fuel, expensive fuel, home charging, public charging, high mileage, and low mileage. A range of answers shows risk better than one fixed number. It also reveals which inputs matter most clearly.
FAQs
1. What is a gas vs electric car cost calculator?
It compares fuel, charging, maintenance, insurance, taxes, purchase price, incentives, depreciation, and resale value. It helps estimate which car may cost less over your selected ownership period.
2. Why does the calculator include depreciation?
Depreciation often becomes one of the largest ownership costs. Including resale value gives a better view than fuel savings alone. It also helps compare cars with different purchase prices.
3. What is weighted electricity rate?
It blends home and public charging prices. For example, if most charging happens at home, the estimate uses more of your home rate and less of the public rate.
4. Why is charging efficiency included?
Some electricity is lost during charging. Charging efficiency adjusts the required kWh upward, so the charging cost estimate is more realistic than battery use alone.
5. What does break-even mean?
Break-even is the estimated time needed for annual electric car savings to recover the extra upfront cost. If the electric option starts cheaper, break-even is immediate.
6. Should I include charger installation cost?
Yes, include it when you plan to install a home charger. If you already have one, enter zero or only the upgrade cost that applies to the new vehicle.
7. Are insurance costs always higher for electric cars?
No. Insurance depends on model, value, safety record, location, driver history, and repair costs. Use quotes for the specific vehicles you are comparing.
8. Can this calculator predict exact ownership cost?
No. It gives a planning estimate. Fuel prices, repair needs, weather, driving habits, incentives, and resale values can change. Update the inputs before making a purchase decision.