function calculateInsuranceValue() {
var originalPurchasePrice = parseFloat(document.getElementById('originalPurchasePrice').value);
var vehicleYear = parseInt(document.getElementById('vehicleYear').value);
var currentMileage = parseFloat(document.getElementById('currentMileage').value);
var vehicleCondition = document.getElementById('vehicleCondition').value;
var accidentHistory = document.getElementById('accidentHistory').value;
var modifications = document.getElementById('modifications').value;
var resultDiv = document.getElementById('result');
// Input validation
if (isNaN(originalPurchasePrice) || originalPurchasePrice <= 0) {
resultDiv.innerHTML = "Please enter a valid Original Purchase Price.";
return;
}
if (isNaN(vehicleYear) || vehicleYear new Date().getFullYear() + 1) { // Allow current year + 1 for new models
resultDiv.innerHTML = "Please enter a valid Vehicle Model Year.";
return;
}
if (isNaN(currentMileage) || currentMileage < 0) {
resultDiv.innerHTML = "Please enter a valid Current Odometer Reading.";
return;
}
var currentYear = new Date().getFullYear();
var age = currentYear – vehicleYear;
if (age = 1) {
estimatedValue *= 0.80; // 20% depreciation
}
if (age >= 2) {
estimatedValue *= 0.85; // 15% of remaining
}
if (age >= 3) {
estimatedValue *= 0.90; // 10% of remaining
}
if (age > 3) {
estimatedValue *= Math.pow(0.95, age – 3); // 5% of remaining for each year after 3
}
// 2. Mileage Adjustment
var averageAnnualMileage = 12000;
var expectedMileage = age * averageAnnualMileage;
var mileageDifference = currentMileage – expectedMileage;
var mileageAdjustmentFactor = 1;
if (mileageDifference > 0) { // Over average mileage
// 1% reduction for every 10,000 miles over average
mileageAdjustmentFactor -= (mileageDifference / 10000) * 0.01;
} else if (mileageDifference < 0) { // Under average mileage
// 0.5% increase for every 10,000 miles under average (less impact)
mileageAdjustmentFactor += (Math.abs(mileageDifference) / 10000) * 0.005;
}
estimatedValue *= mileageAdjustmentFactor;
// 3. Condition Adjustment
var conditionMultiplier = 1;
if (vehicleCondition === "Excellent") {
conditionMultiplier = 1.05; // 5% increase
} else if (vehicleCondition === "Good") {
conditionMultiplier = 1.00; // No change
} else if (vehicleCondition === "Fair") {
conditionMultiplier = 0.90; // 10% decrease
} else if (vehicleCondition === "Poor") {
conditionMultiplier = 0.70; // 30% decrease
}
estimatedValue *= conditionMultiplier;
// 4. Accident History Adjustment
var accidentMultiplier = 1;
if (accidentHistory === "None") {
accidentMultiplier = 1.00; // No change
} else if (accidentHistory === "Minor") {
accidentMultiplier = 0.95; // 5% decrease
} else if (accidentHistory === "Major") {
accidentMultiplier = 0.80; // 20% decrease
}
estimatedValue *= accidentMultiplier;
// 5. Modifications Adjustment
var modificationsMultiplier = 1;
if (modifications === "None") {
modificationsMultiplier = 1.00; // No change
} else if (modifications === "Minor") {
modificationsMultiplier = 1.01; // Slight increase (e.g., quality audio, tint)
} else if (modifications === "Significant") {
modificationsMultiplier = 0.90; // Often decreases market appeal/insurance value for total loss
}
estimatedValue *= modificationsMultiplier;
// Ensure value doesn't go below zero
if (estimatedValue < 0) {
estimatedValue = 0;
}
resultDiv.innerHTML = "Your Estimated Vehicle Insurance Value: $" + estimatedValue.toFixed(2) + "";
}
Understanding Your Vehicle's Insurance Value
When your vehicle is declared a total loss after an accident or theft, your insurance company will pay out its "actual cash value" (ACV) or "agreed value," depending on your policy. This isn't necessarily what you paid for it, but rather its market worth at the time of the loss. Understanding this value is crucial for ensuring you have adequate coverage and for setting realistic expectations for a claim payout.
What Factors Influence Your Vehicle's Value?
Original Purchase Price: The starting point for any valuation.
Vehicle Model Year: Newer vehicles generally hold more value, but depreciation is steepest in the first few years.
Current Odometer Reading (Mileage): Higher mileage typically leads to lower value due to increased wear and tear.
Vehicle Condition: The overall physical and mechanical state of your car. A well-maintained vehicle in excellent condition will command a higher value.
Accident History: Vehicles with a history of accidents, especially major ones, often have a significantly reduced value, even if repaired.
Aftermarket Modifications: While some minor, high-quality modifications might slightly increase value, significant or highly personalized modifications can sometimes decrease the broad market appeal and thus the insurance value.
Make and Model: Certain brands and models depreciate slower or hold their value better than others. (This calculator simplifies this by starting with your purchase price).
Location: Vehicle values can vary by region due to local market demand and supply.
How Insurers Determine Value
Insurance companies use various resources to determine your vehicle's ACV, including:
Third-Party Valuation Guides: Such as Kelley Blue Book (KBB), NADAguides, and Edmunds.
Local Market Analysis: Comparing your vehicle to similar models recently sold in your geographic area.
Professional Appraisals: For unique, classic, or highly modified vehicles, an independent appraisal might be used.
Adjuster's Assessment: An insurance adjuster will inspect your vehicle's condition, mileage, and features.
Limitations of This Calculator
This calculator provides an *estimate* based on common depreciation trends and adjustment factors. It cannot account for every nuance of the market or specific insurer policies. For a precise valuation, consult with your insurance provider or a professional appraiser.
Tips for Maintaining or Increasing Your Vehicle's Value
Regular Maintenance: Keep up with scheduled services and repairs.
Keep Records: Maintain detailed records of all maintenance, repairs, and upgrades.
Cleanliness: Keep your vehicle clean, both inside and out.
Avoid Accidents: Drive safely to prevent damage and maintain a clean history.
Park Smart: Protect your car from environmental damage (sun, hail) and potential dings.
Use this calculator as a helpful tool to get a general idea of your vehicle's worth, but always confirm details with your insurance professional.