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Car Depreciation & Resale Value Calculator

Excellent (Low mileage, pristine maintenance) Average (Standard daily driver, 12k miles/year) Poor (High mileage, visible wear and tear)

Estimated Valuation

Current Resale Value: $0.00
Total Value Lost: $0.00
Retained Value Percentage: 0%

Understanding Car Depreciation: How Much Is Your Vehicle Worth?

Every new vehicle begins losing value the moment it leaves the dealership lot. This phenomenon, known as car depreciation, is the single largest expense for vehicle owners—often exceeding the costs of fuel, insurance, and maintenance combined. Our Car Depreciation Calculator helps you estimate the current market value of your vehicle based on its age, purchase price, and condition.

How Car Depreciation is Calculated

Automobiles typically depreciate using a "declining balance" method. While a brand-new car might lose 20% of its value in the first year, subsequent years usually see a more stable decline of 10% to 15%. The formula used in our tool is:

Current Value = Purchase Price Ă— (1 – Depreciation Rate) ^ Years

Key Factors Affecting Resale Value

  • Mileage: The more miles on the odometer, the lower the value. High-mileage vehicles face higher maintenance risks, driving the price down.
  • Vehicle Condition: Cars with a clean service history, no accidents, and a pristine interior/exterior retain value significantly better than those with damage.
  • Brand Reputation: Certain brands (like Toyota and Honda) historically depreciate slower than luxury European brands or high-end electric vehicles.
  • Market Demand: Trends shift. For example, SUVs and trucks often hold their value better than sedans in the current North American market.

Example Calculation

Imagine you purchased a new SUV for $40,000. If the vehicle is 3 years old and maintained in average condition (15% annual depreciation):

  • Year 1: $40,000 – 15% = $34,000
  • Year 2: $34,000 – 15% = $28,900
  • Year 3: $28,900 – 15% = $24,565

After three years, your vehicle has lost approximately $15,435 in value, retaining roughly 61% of its original purchase price.

function calculateDepreciation() { var price = parseFloat(document.getElementById('purchasePrice').value); var age = parseFloat(document.getElementById('vehicleAge').value); var rate = parseFloat(document.getElementById('depreciationRate').value); var resultArea = document.getElementById('resultArea'); if (isNaN(price) || isNaN(age) || price <= 0 || age < 0) { alert("Please enter valid positive numbers for price and age."); return; } // Calculation: V = P(1 – r)^n // First year usually has a steeper drop. We'll adjust the logic for a more realistic curve: // 20% first year if average, then the selected rate. var currentValue; if (age === 0) { currentValue = price; } else { // First year hit (standard 20% for new cars) var firstYearValue = price * 0.80; // Subsequent years currentValue = firstYearValue * Math.pow((1 – rate), (age – 1)); } // Safety check for negative or near zero if (currentValue < (price * 0.1)) { currentValue = price * 0.1; // Scrap value floor } var totalLoss = price – currentValue; var retainedPercent = (currentValue / price) * 100; // Display results document.getElementById('currentValue').innerText = "$" + currentValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('totalLoss').innerText = "$" + totalLoss.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('retainedPercent').innerText = retainedPercent.toFixed(1) + "%"; resultArea.style.display = 'block'; }

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