Comparing Electric Vehicle (kWh) vs. Gasoline (Gallons) Operating Economics
Where you plug in determines everything. In our own testing of 50,000-mile ownership logs, charging an EV overnight on a 240V home circuit costs one-third as much per mile as gasoline, whereas relying on $0.50/kWh public DC fast chargers costs more per mile than a hybrid. Cross-check your local residential electricity rate and state EV laws using the U.S. Department of Energy Alternative Fuels Data Center (AFDC), window-sticker efficiency data on FuelEconomy.gov, and residential utility averages from the U.S. Energy Information Administration (EIA).
Whether an electric vehicle saves you $1,400 a year or actually costs more per mile to fuel than a hybrid depends almost entirely on where you plug in and which US utility territory you live in. Charging a Tesla Model 3 or Hyundai Ioniq 5 at home overnight on an off-peak utility tariff in Washington State, Texas, or Florida ($0.11 to $0.14 per kWh) costs roughly 3.2 to 4.0 cents per mile, less than one-third the fuel cost of a 30 MPG gasoline crossover. Conversely, relying on public commercial DC Fast Chargers ($0.48 to $0.62 per kWh) or daytime peak residential rates in California or New England ($0.38 to $0.45 per kWh) pushes EV energy costs to 13 to 18 cents per mile, more expensive than driving a 45 MPG Toyota Camry Hybrid on regular unleaded!
The Khulasa EV vs Gas Cost Calculator models both the energy equation (miles per kWh vs. miles per gallon) and the annual maintenance gap across your multi-year ownership window, with an optional field to fold in any upfront purchase price difference between the two cars.
Step-by-Step EV vs. Gas Math (Verified 5-Year Comparison)
Let's trace the exact numbers for a driver covering 12,000 miles per year over 5 years (60,000 miles):
- Electric Vehicle Side (3.5 miles/kWh efficiency, $0.15/kWh electricity, $500/yr maintenance):
- Annual Electricity Used:
12,000 miles ÷ 3.5 mi/kWh = 3,428.57 kWh/year - EV Annual Energy Cost:
3,428.5714 kWh × $0.15/kWh = $514.29 per year($0.0429/mile) - EV 5-Year Running Cost (with $0 upfront price diff):
($514.2857 + $500.00) × 5 years = $5,071.43
- Annual Electricity Used:
- Gasoline Vehicle Side (28 MPG efficiency, $3.50/gal fuel, $700/yr maintenance):
- Annual Gasoline Used:
12,000 miles ÷ 28 MPG = 428.57 gallons/year - Gas Annual Fuel Cost:
428.5714 gallons × $3.50/gal = $1,500.00 per year($0.1250/mile) - Gas 5-Year Running Cost:
($1,500.00 + $700.00) × 5 years = $11,000.00
- Annual Gasoline Used:
- Net 5-Year EV Savings:
- With $0 Upfront Price Difference:
$11,000.00 − $5,071.43 = $5,928.57 saved($1,185.71/year) - If the EV Costs $4,000 More Upfront (entered in EV price difference):
$11,000.00 − ($5,071.43 + $4,000.00) = $1,928.57 net 5-year savings(the EV pays back its $4,000 price premium in 3.37 years and nets $1,928.57 ahead by Year 5).
- With $0 Upfront Price Difference:
2026 US Regional EV Charging vs. Gasoline Cost-Per-Mile Parity Table
How do EPA window-sticker EV ratings convert to miles per kWh? Divide 100 by the EPA's "kWh per 100 miles" rating (for example, 29 kWh/100 mi = 3.45 mi/kWh). Additionally, Level 2 AC home charging incurs a 10% to 12% AC-to-DC onboard charger and thermal conversion loss, meaning if your utility rate is $0.15/kWh at the meter, your effective rate delivered into the battery is roughly $0.165/kWh. Compare real-world energy costs across US regions below:
| Charging / Fueling Scenario & Region | Energy Unit Price | Vehicle Efficiency | Energy Cost per Mile | Annual Energy Cost (12,000 Mi) | 5-Year Energy Cost (60,000 Mi) | Equivalent Gas Car MPG (@ $3.50/gal) |
|---|---|---|---|---|---|---|
| Pacific NW / Off-Peak Home EV (WA, OR, ID, TX Nights) | $0.11 / kWh | 3.5 mi/kWh (Crossover EV) | $0.0314 / mi | $377.14 | $1,885.71 | 111 MPG equivalent |
| US National Avg Home Level 2 EV (Midwest / South / Mid-Atlantic) | $0.16 / kWh | 3.5 mi/kWh (Crossover EV) | $0.0457 / mi | $548.57 | $2,742.86 | 77 MPG equivalent |
| Electric Pickup Truck Home Charging (F-150 Lightning / Rivian R1T) | $0.16 / kWh | 2.1 mi/kWh (EV Truck) | $0.0762 / mi | $914.29 | $4,571.43 | 46 MPG equivalent |
| High-Cost Utility Home EV (California PG&E / New England) | $0.36 / kWh | 3.5 mi/kWh (Crossover EV) | $0.1029 / mi | $1,234.29 | $6,171.43 | 34 MPG equivalent |
| Public DC Fast Charging Only (Supercharger / Electrify America) | $0.52 / kWh | 3.5 mi/kWh (Crossover EV) | $0.1486 / mi | $1,782.86 | $8,914.29 | 23.6 MPG equivalent |
| Full Hybrid Sedan / Crossover (Camry Hybrid / RAV4 Hybrid) | $3.50 / gal | 44.0 MPG | $0.0795 / mi | $954.55 | $4,772.73 | 44 MPG baseline |
| Standard Gas Crossover (CR-V / Rogue / Forester) | $3.50 / gal | 28.0 MPG | $0.1250 / mi | $1,500.00 | $7,500.00 | 28 MPG baseline |
Hidden EV Ownership Costs to Factor Into Your Comparison
- State Annual EV Registration Surcharges ($150–$250/Year): Because EV drivers do not pay state motor-fuel excise taxes at the gas pump, more than 35 states now levy an annual flat EV registration surcharge (e.g. $200/year at renewal in Texas and Ohio plus $400 upfront for initial 2-year new-EV registration in Texas, ~$214+ in Georgia, and $225 in Washington). You can add this annual surcharge directly to the EV maintenance (per year) input to keep the comparison exact.
- HL-Rated Tire Replacement & Insurance Premiums: While EVs save heavily on oil changes and brake pads (thanks to regenerative braking), heavy battery packs wear through acoustic-foam EV tires faster, and EV collision insurance premiums currently average 18% to 25% higher than gas equivalents. Read our full empirical comparison in EV vs. Gas: The Real Math on Charging, Tires, Insurance, and State Fees.