How much cheaper is it to drive an EV?

For home charging at typical residential rates ($0.10-$0.15/kWh), EVs cost $0.03-$0.05 per mile vs. $0.10-$0.15 per mile for gas at $3.50/gallon and 28 MPG. That's a 60-70% per-mile fuel cost reduction. Over 12,000 annual miles, savings typically $600-$1,200/year in fuel alone, plus $500-$700/year in lower maintenance. Total operating savings $1,100-$1,900/year for a typical driver. DC fast charging eliminates most of the per-mile cost advantage, so home charging is essential to the economics.

Are EVs cheaper to maintain?

Yes, significantly. EVs eliminate: oil changes ($50-$100 each, 2-3x/year on gas), spark plugs, fuel filters, exhaust system, transmission service (most EVs have single-speed transmission), and reduce brake wear 2-3x through regenerative braking. EVs still need: tire rotation/replacement (often more frequent due to weight), wipers, cabin filter, brake fluid (occasional), and battery coolant (every 100K miles). Annual maintenance typically $400-$700 for EVs vs. $1,000-$1,500 for similar gas vehicles. Tesla particularly low-maintenance due to integrated design.

What is the average EV efficiency?

Most modern EVs get 3-4 miles per kWh (mi/kWh). Efficient compact EVs (Tesla Model 3, Hyundai Ioniq 6): 4-5 mi/kWh. Mid-size sedans/crossovers (Tesla Model Y, Ford Mustang Mach-E): 3-3.5 mi/kWh. Large SUVs (Rivian R1S, Tesla Model X): 2.5-3 mi/kWh. EV trucks (F-150 Lightning, Rivian R1T, Cybertruck): 1.8-2.5 mi/kWh. Cold weather reduces efficiency 20-40%; hot-weather AC use 10-20%. EPA combined efficiency rating is the standard reference; real-world varies by driving style and conditions.

What tax credits are available for EVs?

Federal: up to $7,500 for qualifying new EVs (purchase must be from US-assembled vehicles meeting battery sourcing requirements; income limits apply — $150K single / $300K joint). Up to $4,000 for qualifying used EVs (lower income limits, vehicle 2 years old, sold by dealer for under $25K). Credits can be claimed at point of sale (transferred to dealer) or on tax return. State credits: vary widely — California $2,000-$7,500 depending on income; New Jersey $4,000; many states $1,000-$5,000. Some states offer HOV lane access regardless of occupancy. Rules change frequently; verify current eligibility.

How long do EV batteries last?

Most modern EV batteries are warrantied for 8 years / 100,000 miles, and typically retain 80-90% of original capacity after 100K miles in normal use. Tesla data shows ~95% retention at 100K miles, 85% at 200K miles. Battery degradation accelerates with: frequent DC fast charging, charging to 100% regularly, and prolonged storage at high state of charge. Best practices: charge to 80% daily (extend to 100% only for long trips), use DC fast charging selectively, park in moderate temperatures when possible. Battery replacement cost: $10K-$20K depending on vehicle (but rarely needed in first 10 years).

EV vs Gas Savings Calculator

Calculate how much you could save by switching to an electric vehicle. Compare fuel costs, maintenance expenses, and total ownership costs over multiple years between EV and gas vehicles.

Electric vehicles cost more upfront than comparable gas vehicles but typically cost substantially less to operate. Fuel cost per mile for EVs is typically $0.03-$0.05 vs. $0.10-$0.15 for gas vehicles — a 60-70% reduction in per-mile energy cost. Maintenance is lower too: no oil changes, brake pads last 2-3x longer due to regenerative braking, fewer moving parts in the drivetrain. Over a typical 10-year ownership horizon, an EV often saves $8,000-$15,000 in operating costs vs. a similar gas vehicle.

The economics aren't universally favorable, though. EVs typically carry $5,000-$15,000 higher purchase prices vs. similar gas vehicles (gap narrowing as battery costs decline). Insurance is often slightly higher. Charging infrastructure varies — home charging is cheapest ($0.10-$0.15/kWh) while DC fast charging on road trips can cost $0.40-$0.60/kWh, similar to gas costs per mile. Depreciation has historically been faster for EVs (battery degradation concerns, rapid technology improvements), though this is moderating with newer models. Federal tax credits (up to $7,500 for qualifying new EVs) and state incentives can substantially offset higher purchase price.

This calculator models operating cost differences over a multi-year horizon — fuel cost (gas vs. electricity at your rates), routine maintenance, and total cost of operation. It doesn't include purchase price differences, financing costs, insurance, or depreciation — those depend on specific vehicle choices and require separate analysis. Use it to: estimate the breakeven horizon where EV operating savings recoup higher purchase price, evaluate whether your specific usage pattern favors EV, and quantify the annual cost difference at your actual mileage and energy prices. For most drivers in moderate-to-high-mileage applications with home charging access, EVs produce meaningful long-term savings; for low-mileage drivers without home charging, the case is weaker.

Inputs

Annual Miles Driven

Gas Car MPG

Gas Price (per Gallon)

EV Efficiency (mi/kWh)

Average EV gets 3-4 miles per kWh

Electricity Rate ($/kWh)

Comparison Period (Years)

Gas Car Annual Maintenance

Oil changes, brakes, etc.

EV Annual Maintenance

Tires, wipers, etc.

Results

Annual Fuel Savings

$1,054

Annual Total Savings

$1,754

Total Savings

$17,543

Gas Cost/Year

$1,500

EV: $446

Cumulative Costs Over Time

Annual Cost Comparison

Year-by-Year Comparison

Year	Gas Fuel	EV Fuel	Gas Cumulative	EV Cumulative	Cumulative Savings
1	$1,500.00	$445.71	$2,700.00	$945.71	$1,754.29
2	$1,500.00	$445.71	$5,400.00	$1,891.43	$3,508.57
3	$1,500.00	$445.71	$8,100.00	$2,837.14	$5,262.86
4	$1,500.00	$445.71	$10,800.00	$3,782.86	$7,017.14
5	$1,500.00	$445.71	$13,500.00	$4,728.57	$8,771.43
6	$1,500.00	$445.71	$16,200.00	$5,674.29	$10,525.71
7	$1,500.00	$445.71	$18,900.00	$6,620.00	$12,280.00
8	$1,500.00	$445.71	$21,600.00	$7,565.71	$14,034.29
9	$1,500.00	$445.71	$24,300.00	$8,511.43	$15,788.57
10	$1,500.00	$445.71	$27,000.00	$9,457.14	$17,542.86

Last updated: May 27, 2026Reviewed by the CalcMountain editorial team

Formula

Annual fuel cost calculations: Gas Annual Fuel Cost = (Annual Miles / MPG) × Gas Price per Gallon EV Annual Energy Cost = (Annual Miles / EV Efficiency mi/kWh) × Electricity Rate per kWh Annual fuel savings: Savings = Gas Cost − EV Cost Annual maintenance savings: Maintenance Savings = Gas Maintenance − EV Maintenance Total annual savings = Fuel Savings + Maintenance Savings Multi-year total savings = Annual Savings × Years Cost per mile: Gas: Gas Price / MPG (e.g., $3.50 / 28 mpg = $0.125/mile) EV: Electricity Rate / EV Efficiency (e.g., $0.13 / 3.5 = $0.037/mile) Example: 12,000 miles/year, 28 MPG gas car, $3.50/gallon, 3.5 mi/kWh EV, $0.13/kWh, 10 year horizon, $1,200 gas vs. $500 EV annual maintenance. Gas annual fuel: (12,000 / 28) × $3.50 = 428.6 gallons × $3.50 = $1,500 EV annual energy: (12,000 / 3.5) × $0.13 = 3,428.6 kWh × $0.13 = $446 Annual fuel savings: $1,500 − $446 = $1,054 Annual maintenance savings: $1,200 − $500 = $700 Annual total savings: $1,754 10-year total savings: $17,540 Cost per mile comparison: Gas: $3.50 / 28 = $0.125/mile EV (home): $0.13 / 3.5 = $0.037/mile (70% cheaper per mile) EV (DC fast charging at $0.40/kWh): $0.40 / 3.5 = $0.114/mile (similar to gas) Important context — these savings cover OPERATING cost only: Vehicle cost differential (additional cost of EV vs. similar gas): Compact EV vs. compact gas: $3,000-$8,000 premium Mid-size EV vs. mid-size gas: $5,000-$12,000 premium Luxury EV vs. luxury gas: often comparable or EV cheaper Federal tax credit (US, qualifying vehicles): Up to $7,500 for new EV purchase (income and vehicle requirements apply) Up to $4,000 for used EV purchase (more restrictive requirements) Breakeven horizon: Vehicle Cost Premium (after credits) / Annual Operating Savings Example: $8,000 EV premium after $7,500 credit = $500 net premium. At $1,754/year savings → breakeven < 1 year. Example: $12,000 premium with no credit = $12,000 net. At $1,754/year → breakeven ~7 years. Sensitivity factors: - Annual miles: doubles savings if you drive 24K instead of 12K - Electricity rate: California ($0.30/kWh) vs. low-rate states ($0.10/kWh) — California EV savings smaller - Gas price: at $5/gallon vs. $3.50, EV savings increase ~40% - Home charging availability: critical — DC fast charging eliminates most of the operating cost advantage

How to use this calculator

Enter your typical annual miles driven (12K-15K is average; check your odometer over a year for precision).
Enter the MPG of the gas vehicle you're comparing (look up EPA combined MPG for the specific model).
Enter current local gas price.
Enter EV efficiency in mi/kWh. Look up EPA estimated efficiency for the specific EV (typical range 2.5-4.5 mi/kWh; compact EVs 3.5-4.5, trucks 1.8-2.5).
Enter your electricity rate per kWh (check your utility bill — varies $0.08-$0.40 across the US, with CA highest).
Enter the comparison period (5-10 years typical for ownership analysis).
Enter annual maintenance estimates: gas vehicles average $1,000-$1,500 (oil, brakes, exhaust); EVs average $400-$700 (tires, wipers, occasional brake fluid, cabin filter).
Review annual and total operating savings.
For full purchase decision: add vehicle cost differential, financing costs, insurance, and expected depreciation. EV operating savings often justify $5K-$10K higher purchase price over 7-10 years.
For home charging: install Level 2 charger ($500-$2,000) for full overnight charging. Without home charging, EV cost economics are substantially weaker.

Worked examples

High-mileage commuter — strong EV case

Sales rep driving 24,000 miles/year. Gas car 28 MPG at $3.50/gal. EV 3.5 mi/kWh at $0.12/kWh home charging. Annual gas cost: (24,000 / 28) × $3.50 = $3,000 Annual EV cost: (24,000 / 3.5) × $0.12 = $823 Annual fuel savings: $2,177 Plus maintenance savings (~$700/year for EV vs. high-mileage gas): $700. Total annual savings: $2,877. 10-year savings: $28,770. Even with $10K EV premium (after credits), payback < 4 years. High-mileage drivers see the strongest EV operating economics. Bonus: HOV lane access (some states), depreciation increasingly favorable for popular EV models.

Low-mileage suburban — marginal EV case

Retiree driving 6,000 miles/year. Gas car 32 MPG at $3.50/gal. EV 3.5 mi/kWh at $0.13/kWh. Annual gas cost: (6,000 / 32) × $3.50 = $656 Annual EV cost: (6,000 / 3.5) × $0.13 = $223 Annual fuel savings: $433 Plus modest maintenance savings: $400. Total annual savings: $833. 10-year savings: $8,330. With $10K EV premium, payback 12+ years. For low-mileage drivers, operating savings rarely justify EV premium over reasonable ownership horizons. Marginal case — the decision should probably hinge on personal preference, environmental priorities, and home charging convenience rather than operating economics.

California high electricity rates

Same 12K-mile driver as default, but California electricity rates ($0.32/kWh average tier). Annual gas cost: $1,500 Annual EV cost: (12,000 / 3.5) × $0.32 = $1,097 Annual fuel savings: only $403 (vs. $1,054 at $0.13/kWh) California electricity rates dramatically reduce EV operating advantage. CA-specific strategies: solar panels (essentially free EV charging from sun), time-of-use rates (charge at off-peak $0.18-$0.20/kWh instead of peak), and PG&E EV-A2 rate plan that's specifically EV-optimized. For Californians without solar or off-peak charging, EV operating savings can be 60% smaller than the national average. The case still works for high-mileage drivers but becomes marginal at low mileage. State EV incentives and HOV access partially compensate.

When to use this calculator

Use this calculator when comparing EV to gas vehicle purchase economics, evaluating switching costs for high-mileage drivers, or assessing whether your specific driving pattern and energy costs favor EV adoption.

Pair with fuel-cost (specific trip and mileage cost analysis), mpg-calculator (gas vehicle efficiency math), and auto-loan calculators for full purchase decision modeling.

Important EV-vs-gas considerations:

1. **Home charging is critical to economics.** Level 2 home charger ($500-$2,000 installed) enables overnight charging at residential rates ($0.08-$0.20/kWh). Without home charging, EV economics weaken substantially — DC fast charging costs $0.40-$0.60/kWh, similar per-mile cost to gas.

2. **Annual mileage drives savings.** Per-mile savings of $0.07-$0.10 produces $840-$1,200/year savings at 12K miles, but $2,100-$3,000 at 30K miles. High-mileage drivers see the strongest case.

3. **Electricity rate matters enormously.** Hawaii ($0.40/kWh) vs. Washington ($0.10/kWh) — 4x difference in per-mile cost. Know your specific rate and time-of-use options.

4. **EV efficiency varies by vehicle type.** Compact EVs: 4-5 mi/kWh. Mid-size EVs: 3-4 mi/kWh. EV trucks/SUVs: 1.8-2.5 mi/kWh. Cold-weather operation reduces efficiency 20-40%; hot-weather AC use 10-20%.

5. **Federal tax credit changes economics dramatically.** Up to $7,500 for qualifying new EVs (income limits and US-assembled requirements apply); $4,000 for used EVs. Verify current eligibility — rules change. Many state credits ($1,000-$7,500) layered on top.

6. **Depreciation is moderating.** Earlier EVs (pre-2018) depreciated fast due to battery concerns. Modern EVs (especially Tesla, Hyundai, Kia) depreciating closer to ICE norms. Battery health certifications now being introduced should further stabilize.

7. **Insurance often $200-$500/year higher** due to higher repair costs (battery replacement very expensive). Get quotes before purchase.

8. **Charging on road trips requires planning.** DC fast charging networks (Electrify America, Tesla Supercharger, EVgo) are growing but variable in coverage. Trip planning apps (PlugShare, ABRP) help. For frequent long-distance driving, EV may be impractical depending on region.

9. **Cold weather reduces range 20-40%.** Significant for northern climates with long drives. Battery preconditioning helps; plan accordingly.

10. **Look at total cost of ownership, not just sticker price.** Operating savings often outweigh higher upfront cost over 7-10 years. AAA and Consumer Reports publish total cost of ownership comparisons.

11. **Environmental considerations:** lifecycle emissions of EVs are typically 30-60% lower than ICE vehicles in most US grid mixes, dropping further as grids decarbonize. EV battery recycling improving rapidly.

12. **PHEVs as middle path.** Plug-in hybrids (PHEV) offer ~30-50 miles electric range plus gas backup. Good fit for buyers without home charging or with occasional long trips, but most operating cost benefit comes from charging at home for daily use.

Common mistakes to avoid

Comparing only fuel cost, ignoring maintenance differential. EV maintenance is genuinely 50% lower; include it for accurate comparison.
Assuming DC fast charging rates for all charging. Home charging is $0.10-$0.15/kWh; fast charging is $0.40-$0.60/kWh. Vast majority of charging should be home.
Ignoring purchase price premium and tax credits. Operating savings are real but must offset higher upfront cost. Include credits.
Forgetting cold-weather range reduction. Northern climate driving reduces range 20-40% in winter. Important for range-anxiety planning.
Underestimating EV insurance. Higher repair costs produce $200-$500/year insurance differential. Get quotes for both vehicles.
Buying largest EV available. Trucks and large SUVs get 1.8-2.5 mi/kWh — operating savings vs. gas equivalent much smaller. Match EV size to actual need.

Frequently Asked Questions

Sources & further reading

Electric Vehicle Tax Credits — U.S. Internal Revenue Service
Electric Vehicles — Comparison Tool — U.S. Department of Energy
EV Cost of Ownership Studies — Consumer Reports

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