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⚡ EV Charging 📊 Gas vs EV 🚀 Supercharger 🔌 Home Install 🗺️ 50-State Rates 📚 2026 Guide
2026 U.S. Energy Parity Benchmark Engine

Gas vs. EV Savings & Payback Calculator

Compare real-world gasoline bills with residential electric vehicle charging tariffs. Calculate annual fuel savings, 5-year total energy disparity, and exactly how many years it takes to recoup the EV purchase price premium.

Avg Annual Fuel Savings
$1,280
At 12,000 miles/yr
Average Payback Time
3.4 Years
On $5,000 price premium
Gas Cost Per Mile
$0.130
28 MPG @ $3.65/gal
EV Cost Per Mile
$0.047
3.5 mi/kWh @ $0.165/kWh

Comparison Inputs & Parameters

EIA Form 861M + AAA Gas
⛽ Baseline Gasoline Vehicle 28 MPG (Midsize Sedan)
⚡ Target Electric Vehicle Tesla Model Y (3.5 mi/kWh)
Annual Driving Mileage 12,000 miles / year
EV Purchase Price Premium (Over Gas Car) $5,000
Payback Time Horizon 100% Breakeven
3.4 Years (41,200 miles)
Annual Fuel Savings
$1,280/yr
Maintenance Bonus
+$330/yr
Gas: $0.130/mi | EV: $0.047/mi | -$0.083/mi

Cumulative Total Savings Fuel + Maintenance

Year 1 Cumulative +$1,610
Year 3 Cumulative +$4,830
Year 5 Cumulative (Ownership) +$8,050
Year 10 (Long-Term Life) +$16,100
*Includes EIA modeled 10% Level 2 AC charging transmission losses and standard AAA $330 annual scheduled maintenance reduction (no oil changes, timing belts, or spark plugs).

The Physics & Economics of EV vs. Gasoline Fuel Parity

When deciding whether to transition from an internal combustion engine (ICE) vehicle to an electric car, fuel cost parity is the single largest operating expense driver. Unlike gasoline, which is priced per gallon, electricity is billed in kilowatt-hours (kWh). To compare these two disparate energy vectors objectively, we must normalize them to Cost Per Mile (CPM).

Gasoline Cost Per Mile Formula

Determined by regional pump price divided by EPA combined MPG:

CPM_gas = Pump Price ($/gal) / EPA Combined MPG

EV Home Charging CPM Formula

Factoring in vehicle efficiency (mi/kWh) and 90% AC charger efficiency:

CPM_ev = Utility Rate ($/kWh) / (Efficiency * 0.90)

Hidden Savings Beyond Fuel: The Maintenance Advantage

According to long-term lifecycle telemetry published by the U.S. Department of Energy (AFDC), battery electric vehicles (BEVs) exhibit a 40% lower scheduled maintenance cost compared to internal combustion engines. Over a 100,000-mile ownership period, EV drivers eliminate:

  • Engine Oil & Filter Changes: $75 every 5,000-7,500 miles (~$1,000 saved).
  • Transmission Fluid, Spark Plugs & Drive Belts: Complete elimination of mechanical wear items (~$1,200 saved).
  • Brake Pad Replacement: Regenerative braking handles 80%+ of deceleration, extending brake rotor and pad life past 100,000 miles (~$800 saved).

Frequently Asked Questions (FAQ)

How does electricity cost compare to gasoline in California? ↓
While California has some of the nation's highest electricity rates ($0.325/kWh standard), it also experiences the highest gasoline prices ($4.85/gal). A 3.5 mi/kWh EV in California costs roughly $0.103/mile to drive, compared to $0.173/mile for a 28 MPG gas car. An average commuter driving 12,000 miles per year still saves approximately $840 annually on fuel alone.
What if I charge primarily at public DC Fast Chargers? ↓
If you rely 100% on commercial DC fast chargers (Superchargers, Electrify America) at $0.42/kWh, your cost per mile will be around $0.12/mi. That is equivalent to driving a 30 MPG car with gas at $3.60/gal. To maximize savings, over 80% of charging should take place overnight at home using Level 2 off-peak rates.