EV vs Gas Vehicle Fuel Cost Comparison Calculator
ANA›Life Services Authority›National Calculator Authority›EV vs Gas Vehicle Fuel Cost Comparison Calculator
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EV vs Gas Vehicle Fuel Cost Comparison Calculator
Compare the annual and lifetime fuel costs between an electric vehicle (EV) and a gasoline-powered vehicle based on your driving habits, local electricity rates, and gas prices.
### Driving Habits
Annual Miles Driven
Ownership Period (Years)
### Electric Vehicle (EV)
EV Energy Consumption (kWh per 100 miles)
Typical EVs: 25–35 kWh/100 mi. Check your vehicle's EPA rating.
Electricity Rate ($ per kWh)
U.S. average ~$0.16/kWh (EIA, 2024). Check your utility bill.
Charging Efficiency (%)
Level 2 chargers are ~85–95% efficient; DC fast chargers ~80–90%.
### Gas Vehicle
Gas Vehicle Fuel Economy (MPG)
Check your vehicle's EPA MPG rating at fueleconomy.gov.
Gas Price ($ per gallon)
U.S. average ~$3.30–$3.60/gallon (EIA, 2024).
Calculate
function evCalc() { // --- Gather inputs --- const milesPerYear = parseFloat(document.getElementById('ev-miles-per-year').value); const ownershipYears = parseFloat(document.getElementById('ev-ownership-years').value); const kwhPer100mi = parseFloat(document.getElementById('ev-kwh-per-100mi').value); const electricityRate = parseFloat(document.getElementById('ev-electricity-rate').value); const chargingEff = parseFloat(document.getElementById('ev-charging-efficiency').value); const mpg = parseFloat(document.getElementById('ev-mpg').value); const gasPrice = parseFloat(document.getElementById('ev-gas-price').value);
const resultDiv = document.getElementById('ev-result');
// --- Validation --- const errors = []; if (isNaN(milesPerYear) || milesPerYear 100) errors.push("Charging efficiency must be between 50% and 100%."); if (isNaN(mpg) || mpg 0) { resultDiv.innerHTML = 'Please fix the following:' + errors.map(e => '').join('') + ''; return; }
// --- EV Cost Calculation --- // kWh consumed per mile (from wall, accounting for charging losses) // kWh drawn from wall per mile = (kwhPer100mi / 100) / (chargingEff / 100) const kwhPerMileWall = (kwhPer100mi / 100) / (chargingEff / 100);
// Annual EV fuel cost ($) const evAnnualCost = milesPerYear * kwhPerMileWall * electricityRate;
// Cost per mile (EV) const evCostPerMile = kwhPerMileWall * electricityRate;
// Lifetime EV fuel cost ($) const evLifetimeCost = evAnnualCost * ownershipYears;
// --- Gas Vehicle Cost Calculation --- // Gallons used per mile = 1 / mpg const gallonsPerMile = 1 / mpg;
// Annual gas cost ($) const gasAnnualCost = milesPerYear * gallonsPerMile * gasPrice;
// Cost per mile (gas) const gasCostPerMile = gallonsPerMile * gasPrice;
// Lifetime gas cost ($) const gasLifetimeCost = gasAnnualCost * ownershipYears;
// --- Savings --- const annualSavings = gasAnnualCost - evAnnualCost; const lifetimeSavings = gasLifetimeCost - evLifetimeCost; const savingsPct = ((annualSavings / gasAnnualCost) * 100);
const evIsCheaper = evAnnualCost
MetricElectric VehicleGas Vehicle
Cost per Mile${fmtUSD(evCostPerMile)}${fmtUSD(gasCostPerMile)} Annual Fuel Cost${fmtUSD(evAnnualCost)}${fmtUSD(gasAnnualCost)} Lifetime Fuel Cost (${fmt(ownershipYears,0)} yrs)${fmtUSD(evLifetimeCost)}${fmtUSD(gasLifetimeCost)}
${cheaperLabel} ${savingsLabel}: ${fmtUSD(absSavings)}/year (${fmt(absSavingsPct,1)}% less) ${lifetimeSavingsLabel} over ${fmt(ownershipYears,0)} years: ${fmtUSD(absLifetimeSavings)}
#### Detailed Breakdown
Annual Miles${fmt(milesPerYear,0)} miles EV: kWh drawn from wall per mile${fmt(kwhPerMileWall,4)} kWh/mi EV: Annual kWh consumed${fmt(milesPerYear * kwhPerMileWall,1)} kWh Gas: Gallons per mile${fmt(gallonsPerMile,4)} gal/mi Gas: Annual gallons consumed${fmt(milesPerYear * gallonsPerMile,1)} gallons
`; }
#### Formulas Used
EV Cost per Mile (wall-to-wheel):
EV Cost/Mile = (kWh per 100 mi ÷ 100) ÷ (Charging Efficiency ÷ 100) × Electricity Rate ($/kWh)
Charging efficiency accounts for energy lost as heat during AC→DC conversion in the charger and battery.
EV Annual Fuel Cost:
EV Annual Cost = Annual Miles × EV Cost per Mile
Gas Cost per Mile:
Gas Cost/Mile = Gas Price ($/gal) ÷ MPG
Gas Annual Fuel Cost:
Gas Annual Cost = Annual Miles × Gas Cost per Mile
Lifetime Cost:
Lifetime Cost = Annual Cost × Ownership Years
Annual Savings:
Annual Savings = Gas Annual Cost − EV Annual Cost
#### Assumptions & References
- EV energy consumption default: 30 kWh/100 mi — mid-range for popular EVs (e.g., Tesla Model 3: ~25 kWh/100 mi; larger SUVs: ~35+ kWh/100 mi). Verify at fueleconomy.gov.
- This calculator covers fuel costs only. It does not include vehicle purchase price, insurance, maintenance, depreciation, tax credits, or financing costs.
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