Mortgage to Income Ratio Calculator

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Advanced Car Depreciation Calculator

Estimate the current market value of your vehicle based on age, mileage, and condition.

Excellent (Showroom quality) Good (Minor wear) Fair (Visible scratches/mechanical wear) Poor (Major issues)
Estimated Current Value: $0.00
Total Depreciation: $0.00
Percentage Value Retained: 0%

How Does Car Depreciation Work?

Depreciation is the difference between the amount you spent when you bought your car and the amount you get back when you sell or trade it in. It is typically the single largest cost of owning a new vehicle, often exceeding fuel, insurance, or maintenance costs.

Most new cars lose approximately 20% of their value in the first year and roughly 15% each year thereafter until the five-year mark. By the time a car is five years old, it has typically lost 60% or more of its initial purchase price.

Factors That Influence Your Car's Resale Value

  • Mileage: The average driver covers 12,000 to 15,000 miles per year. Exceeding this "normal" range accelerates depreciation because it implies more wear and tear on the engine and suspension.
  • Condition: Scratches, interior stains, and mechanical issues drastically lower value. A car in "Excellent" condition can command a 5-10% premium over a "Fair" one.
  • Brand Reputation: Certain brands like Toyota and Honda tend to hold their value significantly better than luxury European brands or discontinued models.
  • Number of Owners: A "one-owner" car is generally more desirable to buyers as it suggests consistent maintenance history.

Example Calculation

Let's say you bought a SUV for $40,000. After 3 years of driving 12,000 miles per year in "Good" condition:

  • Year 1: Value drops to $32,000 (20% loss).
  • Year 2: Value drops to $27,200 (15% loss).
  • Year 3: Value drops to $23,120 (15% loss).
  • Total Estimated Value: ~$23,120

How to Minimize Depreciation

While you cannot stop depreciation, you can slow it down. Maintain a full service history (stamped book or digital records), keep the mileage below the national average, and choose popular colors like silver, white, or black which are easier to resell. Finally, consider buying a "nearly new" car (1-2 years old) to let the previous owner take the initial 20-30% depreciation hit.

function calculateCarDepreciation() { var price = parseFloat(document.getElementById('purchasePrice').value); var age = parseFloat(document.getElementById('carAge').value); var mileage = parseFloat(document.getElementById('annualMileage').value); var conditionMult = parseFloat(document.getElementById('vehicleCondition').value); if (isNaN(price) || isNaN(age) || isNaN(mileage) || price <= 0) { alert("Please enter valid positive numbers for price, age, and mileage."); return; } var currentVal = price; // Apply annual depreciation curves for (var i = 0; i < age; i++) { if (i === 0) { // First year hit is usually harder currentVal = currentVal * 0.80; } else if (i < 5) { // Years 2-5 currentVal = currentVal * 0.85; } else { // Years 6+ depreciation slows down currentVal = currentVal * 0.90; } } // Mileage adjustment // Standard is 12,000 per year. // We penalize or reward based on deviation from 12k/year. var expectedMileage = age * 12000; var actualMileage = mileage * age; var mileageDifference = actualMileage – expectedMileage; // Every 1,000 miles over/under average affects value by approx 0.5% var mileageAdjustmentPercent = (mileageDifference / 1000) * 0.005; currentVal = currentVal * (1 – mileageAdjustmentPercent); // Apply condition multiplier currentVal = currentVal * conditionMult; // Ensure value doesn't drop below scrap value (approx 5% of original or $500) var floorValue = Math.max(price * 0.05, 500); if (currentVal < floorValue) { currentVal = floorValue; } var totalDepreciation = price – currentVal; var percentRetained = (currentVal / price) * 100; // Display results document.getElementById('currentValue').innerText = '$' + currentVal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('totalDepreciation').innerText = '$' + totalDepreciation.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('percentRetained').innerText = percentRetained.toFixed(1) + '%'; document.getElementById('resultArea').style.display = 'block'; }

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