Why Compare Total Cost of Ownership (TCO)?
Looking only at sticker price gives an incomplete picture of vehicle economics. While electric cars often have a higher upfront MSRP, government incentives, lower home fueling costs, and reduced routine maintenance significantly lower the true cost of operating an EV over time.
Key ownership factors: - Upfront Incentives: Federal Clean Vehicle Credits ($7,500) and state rebates narrow the initial purchase price gap. - Fuel Economics: Electricity costs roughly 60%–70% less per mile driven than gasoline. - Maintenance Savings: EVs eliminate engine oil changes, spark plugs, timing belts, and muffler repairs.
5-Year Ownership Cost Flow
Mathematical Formulas
1. Annual & 5-Year Fuel Costs
[ \text{Fuel}{\text{gas, 5yr}} = 5 \times \left( \frac{\text{Miles}{\text{annual}}}{\text{MPG}} \right) \times P_{\text{gas}} ] [ \text{Fuel}{\text{EV, 5yr}} = 5 \times \left( \frac{\text{Miles}{\text{annual}}}{\text{Efficiency}{\text{mi/kWh}}} \right) \times P{\text{elec}} ]
2. Annual & 5-Year Maintenance Costs
[ \text{Maint}{\text{gas, 5yr}} = 5 \times \text{Miles}{\text{annual}} \times C_{\text{maint, gas}} ] [ \text{Maint}{\text{EV, 5yr}} = 5 \times \text{Miles}{\text{annual}} \times C_{\text{maint, EV}} ]
3. 5-Year Total Cost of Ownership (TCO)
[ \text{TCO}{\text{gas}} = \text{Price}{\text{gas}} + \text{Fuel}{\text{gas, 5yr}} + \text{Maint}{\text{gas, 5yr}} ] [ \text{TCO}{\text{EV}} = (\text{Price}{\text{EV}} - \text{Credit}{\text{EV}}) + \text{Fuel}{\text{EV, 5yr}} + \text{Maint}_{\text{EV, 5yr}} ]
Real-World 5-Year Cost Comparison (12,000 Miles / Year)
| Cost Category | Gas Car ($35,000 MSRP) | EV ($42,000 MSRP - $7.5k Tax Credit) | Cost Difference |
|---|---|---|---|
| Net Vehicle Purchase Price | $35,000 | $34,500 | EV saves $500 |
| 5-Year Fuel Costs | $7,821 ($3.65/gal @ 28 MPG) | $2,743 ($0.16/kWh @ 3.5 mi/kWh) | EV saves $5,078 |
| 5-Year Routine Maintenance | $5,400 ($0.09/mi) | $3,000 ($0.05/mi) | EV saves $2,400 |
| Total 5-Year TCO | $48,221 | $40,243 | EV saves $7,978 |
Step-by-Step Usage Guide
- Enter Purchase Prices: Input sticker price for both gas and electric models.
- Apply EV Incentives: Enter eligible federal tax credits ($7,500) or local rebates.
- Set Annual Driving Mileage: Input expected miles driven per year (e.g. 12,000 miles).
- Input Local Fuel & Electricity Rates: Enter current gas price ($/gal) and residential electric rate ($/kWh).
- Review 5-Year Total Savings: See the complete 5-year cost breakdown and net EV savings.
Frequently Asked Questions
Is an EV cheaper over 5 years than a gas car despite a higher purchase price?
In most cases, yes. While EVs may carry a higher sticker price, federal tax credits ($7,500), lower fuel costs (saving ~$1,000+/yr), and lower maintenance costs offset the price difference within 3 to 5 years.
How much cheaper is EV maintenance than gas car maintenance?
EVs cost roughly 40% to 50% less to maintain because they do not require oil changes, spark plug replacements, transmission flushes, or timing belts, and regenerative braking extends brake pad life.
How does annual mileage impact the EV break-even point?
Higher annual mileage accelerates the break-even point. Driving 15,000+ miles per year yields faster fuel savings than driving 6,000 miles per year.
Does this calculator account for vehicle depreciation?
This tool focuses on direct cash outlay (purchase price net of tax credits, fuel, and routine maintenance). Depreciation varies widely by make and model.
What is the average electricity cost per mile for an EV?
At $0.16/kWh and 3.5 mi/kWh, an EV costs ~$0.046 per mile to fuel, compared to ~$0.130 per mile for a 28 MPG gas car at $3.65/gal.
Can EV tax credits be applied directly at the point of sale?
Yes, starting in 2024, eligible US buyers can transfer the federal $7,500 tax credit to participating dealers to reduce the vehicle purchase price upfront.
Does the Gas vs EV comparison calculator store my data?
No. All calculations run strictly in your local browser.