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Car Depreciation Calculator

Estimate your vehicle's current resale value and total loss over time

Excellent (Showroom condition) Good (Standard wear and tear) Fair (Visible dents/high mileage) Poor (Needs mechanical repair)

Estimated Resale Value

$0.00

Total Depreciation Lost: $0.00
Value Retained: 0%

How Car Depreciation Works

Car depreciation is the difference between what you paid for your vehicle and what you can sell it for later. It is the single largest expense of car ownership, often costing more than fuel, insurance, or maintenance.

The Standard Depreciation Curve

On average, a new car loses value at the following rates:

  • Minute One: 9-11% loss as soon as you drive off the lot.
  • Year 1: 20% total loss from the original sticker price.
  • Years 2-5: 15% to 20% loss per year.
  • After 5 Years: Most cars retain only about 40% of their original value.

Example Calculation

If you purchase a car for $30,000 and keep it for 3 years in good condition:

  1. Year 1: $30,000 – 20% = $24,000
  2. Year 2: $24,000 – 15% = $20,400
  3. Year 3: $20,400 – 15% = $17,340

In this scenario, your estimated resale value is $17,340, meaning the car cost you $12,660 in depreciation alone over three years.

Factors That Impact Your Car's Resale Value

  • Mileage: The average driver covers 12,000 to 15,000 miles per year. Exceeding this significantly lowers your car's value.
  • Maintenance History: A well-documented service book proves the car was cared for, commanding a higher price.
  • Brand Reputation: Brands like Toyota, Honda, and Subaru historically hold their value better than luxury European imports.
  • Fuel Economy: As gas prices rise, fuel-efficient vehicles and hybrids tend to depreciate slower.
  • Condition: Smoker-owned cars or those with interior stains can lose an additional 10-15% of their value.
function calculateCarDepreciation() { var price = parseFloat(document.getElementById('purchasePrice').value); var age = parseInt(document.getElementById('vehicleAge').value); var condition = document.getElementById('vehicleCondition').value; if (isNaN(price) || price <= 0) { alert("Please enter a valid purchase price."); return; } if (isNaN(age) || age < 0) { alert("Please enter a valid vehicle age."); return; } var currentValue = price; // Calculate based on declining balance method for (var i = 1; i <= age; i++) { var rate = 0; if (i === 1) { rate = 0.20; // 20% first year } else if (i <= 5) { rate = 0.15; // 15% years 2-5 } else { rate = 0.10; // 10% after year 5 } currentValue = currentValue * (1 – rate); } // Condition adjustment var conditionModifier = 1.0; if (condition === 'excellent') { conditionModifier = 1.05; // 5% bonus } else if (condition === 'fair') { conditionModifier = 0.85; // 15% penalty } else if (condition === 'poor') { conditionModifier = 0.65; // 35% penalty } currentValue = currentValue * conditionModifier; // Minimum scrap value (roughly 5% of original or $500) var minVal = Math.max(price * 0.05, 500); if (currentValue < minVal) { currentValue = minVal; } var totalLost = price – currentValue; var percentRetained = (currentValue / price) * 100; // Display results document.getElementById('resaleValue').innerText = "$" + currentValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('totalLost').innerText = "$" + totalLost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('percentRetained').innerText = percentRetained.toFixed(1) + "%"; document.getElementById('resultArea').style.display = 'block'; // Scroll to result for mobile users document.getElementById('resultArea').scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }

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