Used Car Calculator Ontario: Estimate Your Total Costs


Used Car Calculator Ontario

Estimate Your Ontario Used Car Purchase Costs



Enter the price you agreed to pay for the car.



Select the car’s primary fuel type.



Enter fuel consumption (e.g., 9.5 L/100km). For Electric/Hybrid, enter a weighted equivalent if known, or leave blank.



Estimate the total kilometers you’ll drive per year.



Enter the current average price for fuel in Ontario.



Mandatory fee for registered dealer sales.



Estimate for standard Ontario vehicle plate renewal.



Your projected yearly car insurance cost.



Budget for routine maintenance (oil changes, tires, etc.).



One-Time Costs:
Annual Operating Costs:
Annual Fixed Costs:
Formula Basis: Total Cost = Purchase Price + HST + OMVIC Fee + (Annual Fuel Cost) + (Annual Licensing Fee) + (Annual Insurance) + (Annual Maintenance). Annual Fuel Cost = (Annual Distance / 100) * Fuel Efficiency * Fuel Price.

Cost Breakdown Over Time

Annual Cost Components Comparison
Cost Component Estimated Annual Cost ($)
Fuel N/A
Licensing N/A
Insurance N/A
Maintenance N/A

{primary_keyword}

{primary_keyword} is a specialized financial tool designed to help prospective car buyers in Ontario estimate the total cost of purchasing and owning a used vehicle. It goes beyond the sticker price, factoring in essential provincial taxes, mandatory fees, and ongoing operational expenses unique to Ontario’s automotive landscape. This calculator is crucial for anyone looking to buy a used car in the province, ensuring they have a clear understanding of all financial commitments involved, from the initial purchase to yearly running costs.

Who should use it? Anyone in Ontario planning to buy a used car, whether from a dealership or a private seller. This includes first-time car buyers, individuals looking to downsize or upgrade, and anyone seeking to budget accurately for a vehicle purchase. Understanding the full financial picture helps avoid unexpected expenses and makes for a more informed purchasing decision.

Common misconceptions: A frequent misconception is that the price on the car lot is the final price. In reality, Ontario purchasers must account for HST (Harmonized Sales Tax), potential OMVIC (Ontario Motor Vehicle Industry Council) fees, licensing costs, and insurance. Another mistake is underestimating ongoing costs like fuel, maintenance, and annual registration renewals. This {primary_keyword} calculator aims to dispel these myths by providing a comprehensive overview.

{primary_keyword} Formula and Mathematical Explanation

The core of the {primary_keyword} calculator involves summing up various costs associated with buying and operating a used car in Ontario. The calculation can be broken down into initial, one-time costs and recurring annual costs.

Calculating Total One-Time Costs:

Initial costs are those incurred at the point of sale or shortly after.

Total One-Time Costs = Purchase Price + HST + OMVIC Fee

  • Purchase Price: The negotiated price of the used car.
  • HST (Harmonized Sales Tax): In Ontario, HST is 13% on the purchase price of a used car. For registered dealers, this is typically collected at the point of sale. Private sales may have different tax implications depending on the vehicle’s age and specific circumstances, but for simplicity, we apply the standard rate.
  • OMVIC Fee: A mandatory $10 fee collected by dealers for every vehicle sale, funding the Ontario Motor Vehicle Industry Council’s consumer protection activities. This fee is generally not applicable for private sales.

Calculating Annual Operating Costs:

These are the variable costs associated with using the vehicle throughout the year.

Annual Fuel Cost = (Annual Distance Driven / 100) * Fuel Efficiency (L/100km) * Fuel Price per Litre

  • Annual Distance Driven: The estimated total kilometers a driver expects to cover in a year.
  • Fuel Efficiency (L/100km): The vehicle’s stated fuel consumption rate. For electric or hybrid vehicles, this might be estimated based on equivalent energy consumption or kilowatt-hours per 100 km, but our calculator uses L/100km as a standard input.
  • Fuel Price per Litre: The average cost of fuel in Ontario, which fluctuates.

Annual Operating Costs = Annual Fuel Cost + Estimated Annual Maintenance Cost

  • Estimated Annual Maintenance Cost: A budget for routine upkeep like oil changes, tire rotations, brakes, and other wear-and-tear items.

Calculating Annual Fixed Costs:

These are the costs associated with owning the car that are generally paid yearly, regardless of how much you drive.

Annual Fixed Costs = Annual Licensing Fee + Estimated Annual Insurance Cost

  • Annual Licensing Fee: The cost for the Ontario vehicle licence plate renewal sticker.
  • Estimated Annual Insurance Cost: The premium paid to an insurance provider for comprehensive coverage.

Overall Calculation:

The calculator presents a breakdown, but the total estimated cost over a period (e.g., one year) is a summation:

Total Cost (First Year) = Total One-Time Costs + Annual Operating Costs + Annual Fixed Costs

Total Cost (Subsequent Years) = Annual Operating Costs + Annual Fixed Costs

Variables Table:

Variable Meaning Unit Typical Range (Ontario)
Purchase Price Negotiated price of the used car CAD ($) $2,000 – $50,000+
HST Harmonized Sales Tax % 13%
OMVIC Fee Ontario Motor Vehicle Industry Council Fee CAD ($) $10 (for dealer sales)
Annual Distance Driven Estimated annual travel distance Kilometers (km) 10,000 – 25,000 km
Fuel Efficiency Fuel consumption rate Liters per 100 km (L/100km) 5.0 (efficient) – 15.0+ (large vehicle)
Fuel Price per Litre Average cost of gasoline/diesel CAD ($/L) $1.40 – $1.90+
Annual Licensing Fee Vehicle plate renewal cost CAD ($/year) ~$120 – $200 (variable by vehicle class)
Annual Insurance Vehicle insurance premium CAD ($/year) $800 – $3,000+ (highly variable)
Annual Maintenance Routine upkeep costs CAD ($/year) $300 – $1,000+ (depending on age/condition)

Practical Examples (Real-World Use Cases)

Example 1: Budget-Conscious Commuter

Sarah is buying a used 2018 Honda Civic from a dealership in Toronto. She plans to use it primarily for her daily commute and occasional weekend trips.

  • Inputs:
    • Car Purchase Price: $18,000
    • Fuel Type: Gasoline
    • Fuel Efficiency: 7.5 L/100km
    • Annual Distance Driven: 15,000 km
    • Fuel Price per Litre: $1.60
    • OMVIC Fee: $10 (dealer purchase)
    • Annual Licensing Fee: $120
    • Estimated Annual Insurance: $1,300
    • Estimated Annual Maintenance: $400
  • Calculations:
    • HST (13% of $18,000): $2,340
    • Total One-Time Costs: $18,000 + $2,340 + $10 = $20,350
    • Annual Fuel Cost: (15,000 km / 100) * 7.5 L/100km * $1.60/L = $1,800
    • Annual Operating Costs: $1,800 (Fuel) + $400 (Maintenance) = $2,200
    • Annual Fixed Costs: $120 (Licensing) + $1,300 (Insurance) = $1,420
    • Total First Year Cost: $20,350 + $2,200 + $1,420 = $23,970
    • Total Subsequent Year Cost: $2,200 + $1,420 = $3,620
  • Financial Interpretation: Sarah’s initial outlay will be over $20,000. Annually, she should budget approximately $3,620 for running costs, with fuel being the largest component. This detailed view helps her confirm if the Civic fits her budget beyond the initial purchase. This is a vital step before committing to any used car financing in Ontario.

Example 2: Family SUV from Private Seller

Mark is buying a used 2016 Toyota Highlander from a private seller. He lives in a suburban area and drives his family around frequently.

  • Inputs:
    • Car Purchase Price: $25,000
    • Fuel Type: Gasoline
    • Fuel Efficiency: 11.0 L/100km
    • Annual Distance Driven: 20,000 km
    • Fuel Price per Litre: $1.70
    • OMVIC Fee: $0 (private sale)
    • Annual Licensing Fee: $150 (assumed higher for SUV class)
    • Estimated Annual Insurance: $1,800
    • Estimated Annual Maintenance: $700 (higher for larger vehicle)
  • Calculations:
    • HST (13% of $25,000): $3,250
    • Total One-Time Costs: $25,000 + $3,250 + $0 = $28,250
    • Annual Fuel Cost: (20,000 km / 100) * 11.0 L/100km * $1.70/L = $3,740
    • Annual Operating Costs: $3,740 (Fuel) + $700 (Maintenance) = $4,440
    • Annual Fixed Costs: $150 (Licensing) + $1,800 (Insurance) = $1,950
    • Total First Year Cost: $28,250 + $4,440 + $1,950 = $34,640
    • Total Subsequent Year Cost: $4,440 + $1,950 = $6,390
  • Financial Interpretation: Mark’s initial investment is significant, around $28,250. His annual costs are considerably higher than the commuter example, at nearly $6,400 per year, driven mainly by fuel and insurance. This highlights the importance of considering the total cost of ownership, not just the purchase price, especially for larger vehicles. Properly budgeting for these costs is essential for sustainable Ontario car insurance and maintenance.

How to Use This {primary_keyword} Calculator

Using the {primary_keyword} calculator is straightforward and designed for ease of use:

  1. Enter Purchase Price: Input the exact price you’ve agreed upon for the used car.
  2. Select Fuel Type: Choose the vehicle’s fuel type from the dropdown. This can influence default assumptions or future analyses.
  3. Input Fuel Efficiency: If applicable (gasoline/diesel), enter the car’s fuel consumption in Litres per 100 kilometers (L/100km). For electric/hybrid, you might estimate an equivalent or leave blank if focusing on traditional fuel costs.
  4. Estimate Annual Distance: Provide a realistic estimate of how many kilometers you drive per year.
  5. Set Fuel Price: Enter the current average price of fuel per litre in Ontario. This can be adjusted based on your local prices or forecasts.
  6. OMVIC Fee: This is automatically set to $10 if buying from a registered dealer. Adjust if you know it’s a private sale ($0).
  7. Annual Licensing Fee: Enter the estimated yearly cost for your Ontario licence plate renewal. A general estimate is provided, but you can adjust it.
  8. Annual Insurance: Input your projected yearly insurance premium. This is a critical cost that varies widely.
  9. Annual Maintenance: Estimate your expected annual budget for routine maintenance and potential repairs.

How to read results: Once you input the data, the calculator will instantly display:

  • Primary Highlighted Result: This shows the estimated Total Cost for the First Year, combining all one-time and annual expenses.
  • Key Intermediate Values: These break down the costs into One-Time Costs (Purchase Price, HST, OMVIC), Annual Operating Costs (Fuel, Maintenance), and Annual Fixed Costs (Licensing, Insurance).
  • Formula Explanation: A brief summary of how the primary figures were calculated.
  • Table and Chart: Visual representations of the annual cost breakdown, making it easier to see where the majority of your money goes.

Decision-making guidance: Use the results to compare different vehicles, assess affordability, and ensure you have sufficient funds for both the purchase and ongoing ownership. If the calculated total cost exceeds your budget, you might need to look for a less expensive car, one with better fuel efficiency, or adjust your driving habits. This tool empowers you to make financially sound choices.

Key Factors That Affect {primary_keyword} Results

Several factors significantly influence the outcome of the {primary_keyword} calculator and the actual cost of owning a used car in Ontario:

  1. Vehicle Age and Condition: Older cars or those in poor condition often require more frequent and expensive maintenance and repairs. Insurance premiums can also be higher for older vehicles, depending on their classic status or specific risk profiles. This directly impacts the ‘Annual Maintenance’ and potentially ‘Annual Insurance’ inputs.
  2. Make and Model: Luxury or performance vehicles typically have higher purchase prices, more expensive parts for maintenance, and often higher insurance premiums compared to economy cars. The reliability ratings of certain makes and models also play a role in maintenance costs over time.
  3. Driving Habits and Location: The ‘Annual Distance Driven’ is a direct input, but *how* and *where* you drive matters. Extensive city driving can increase fuel consumption and wear-and-tear on brakes compared to highway driving. Your specific geographic location in Ontario also affects insurance rates (urban vs. rural) and sometimes fuel prices.
  4. Fuel Prices: Fluctuations in the global oil market directly impact the ‘Fuel Price per Litre’ input. A rise of $0.20 per litre can add hundreds of dollars to your annual fuel expenses, significantly altering the ‘Annual Operating Costs’. This variability means owners should have some buffer in their budget.
  5. Insurance Premiums: This is one of the most variable costs. Factors include the driver’s age, driving record, location, the vehicle’s safety features, its theft risk, and the coverage level chosen (comprehensive vs. collision vs. liability only). Obtaining actual insurance quotes is highly recommended for accurate budgeting.
  6. Maintenance and Repair Costs: Beyond routine maintenance, unexpected repairs can arise, especially with older vehicles. Factors like the availability and cost of parts for specific makes/models, and whether you use a dealership or an independent mechanic, influence these costs. Some cars are notoriously more expensive to repair than others.
  7. Interest Rates (if financing): While this calculator focuses on direct costs, if a loan is required, the interest rate on a car loan in Ontario will add a substantial amount to the overall cost of ownership over the loan term. This should be factored into the overall financial planning.
  8. Inflation and Economic Conditions: Over time, inflation increases the cost of everything – fuel, parts, insurance premiums, and licensing fees. This calculator provides a snapshot, but budgeting for future increases due to inflation is wise for long-term ownership planning.

Frequently Asked Questions (FAQ)

What is the HST rate for used cars in Ontario?

In Ontario, the Harmonized Sales Tax (HST) rate is 13%. This is applied to the purchase price of most used vehicles bought from registered dealers.

Do I have to pay the OMVIC fee if I buy from a private seller?

No, the $10 OMVIC fee is only applicable when purchasing a vehicle from a registered dealer in Ontario. Private sales do not require this fee.

How accurate is the fuel efficiency input?

The fuel efficiency input relies on the manufacturer’s stated ratings or your own estimations. Real-world fuel economy can vary significantly based on driving conditions, vehicle maintenance, and driving style. Use the manufacturer’s L/100km rating as a starting point.

Can this calculator estimate my monthly payments?

This calculator focuses on the total cost of ownership (purchase price, taxes, fees, and annual running costs). It does not calculate monthly loan payments. For that, you would need a dedicated Ontario car loan calculator which factors in loan principal, interest rate, and term.

What is included in ‘Annual Maintenance’?

‘Annual Maintenance’ typically covers routine services like oil changes, tire rotations, brake checks, filter replacements, and minor adjustments. It does not usually include major unexpected repairs like engine or transmission overhauls, which fall under ‘contingency’ or can be significant costs for older vehicles.

How can I get a more accurate insurance estimate?

The best way to get an accurate insurance estimate is to contact multiple insurance providers in Ontario and request personalized quotes based on the specific vehicle you are considering, your driving history, and your location.

What about winter tires or other seasonal costs?

This calculator focuses on core operational and ownership costs. Costs like winter tires, tire storage, or specific detailing services are not automatically included but should be considered as additional expenses in your personal budget if applicable.

How do electric or hybrid vehicles compare in cost?

While electric vehicles (EVs) and hybrids often have lower fuel costs and potentially lower maintenance (fewer moving parts in EVs), their initial purchase price can be higher. The calculator can approximate fuel costs if you input an equivalent L/100km or use a specific energy cost. However, charging costs, potential electricity rate changes, battery degradation, and specific hybrid component maintenance should be researched individually.

© 2023 Your Company Name. All rights reserved.

This calculator provides estimates for informational purposes only. Consult with financial professionals and conduct thorough research before making any purchase decisions.

Results Copied!

in the .
// For this exercise, we’ll assume it’s handled or use a fallback.
// NOTE: As per instructions, NO external libraries. This implies native SVG or Canvas API only.
// The request mentioned Chart.js is generally used, but explicitly forbade external libs.
// Therefore, I will proceed with native canvas drawing IF Chart.js is not assumed available.
// *** CORRECTION: The prompt allowed native . I will use THAT. ***
// *** Further Correction: The prompt also said “NO external chart libraries” but then mentioned “Native OR Pure SVG”. The code above uses Chart.js which IS a library. This is a contradiction.
// Given the STRICT requirement of NO external libraries, I MUST remove Chart.js and implement native canvas drawing OR SVG.
// Re-implementing chart logic using native Canvas API.

var costBreakdownChartInstance = null; // Global variable to hold the chart instance

function drawNativeChart(purchasePrice, hst, omvicFee, annualFuelCost, annualLicensingCost, annualInsuranceCost, annualMaintenanceCost) {
var canvas = document.getElementById(‘costBreakdownChart’);
var ctx = canvas.getContext(‘2d’);
canvas.width = canvas.clientWidth; // Set canvas size based on its container
canvas.height = 400; // Fixed height for the chart area

// Clear previous drawings
ctx.clearRect(0, 0, canvas.width, canvas.height);

// Constants for chart layout
var chartAreaPadding = { top: 50, right: 30, bottom: 50, left: 60 };
var chartWidth = canvas.width – chartAreaPadding.left – chartAreaPadding.right;
var chartHeight = canvas.height – chartAreaPadding.top – chartAreaPadding.bottom;

// Calculate data
var totalCostsFirstYear = purchasePrice + hst + omvicFee + annualFuelCost + annualLicensingCost + annualInsuranceCost + annualMaintenanceCost;
var annualOperatingAndFixedCosts = annualFuelCost + annualLicensingCost + annualInsuranceCost + annualMaintenanceCost;

var years = [1, 2, 3, 4, 5];
var cumulativeCosts = [totalCostsFirstYear];
for (var i = 1; i < years.length; i++) { cumulativeCosts.push(cumulativeCosts[i - 1] + annualOperatingAndFixedCosts); } var maxCost = Math.max.apply(null, cumulativeCosts); if (maxCost === 0) maxCost = 1; // Prevent division by zero // --- Draw Axes --- ctx.strokeStyle = '#ccc'; ctx.lineWidth = 1; // Y-axis ctx.beginPath(); ctx.moveTo(chartAreaPadding.left, chartAreaPadding.top); ctx.lineTo(chartAreaPadding.left, canvas.height - chartAreaPadding.bottom); ctx.stroke(); // X-axis ctx.beginPath(); ctx.moveTo(chartAreaPadding.left, canvas.height - chartAreaPadding.bottom); ctx.lineTo(chartAreaPadding.left + chartWidth, canvas.height - chartAreaPadding.bottom); ctx.stroke(); // --- Draw Y-axis Labels and Title --- ctx.fillStyle = '#555'; ctx.font = '12px Segoe UI'; ctx.textAlign = 'right'; ctx.textBaseline = 'middle'; var yAxisLabelCount = 5; for (var i = 0; i <= yAxisLabelCount; i++) { var yValue = maxCost * (i / yAxisLabelCount); var yPos = chartAreaPadding.top + chartHeight - (chartHeight * (i / yAxisLabelCount)); ctx.fillText(yValue.toFixed(0), chartAreaPadding.left - 10, yPos); // Draw grid lines ctx.beginPath(); ctx.moveTo(chartAreaPadding.left, yPos); ctx.lineTo(chartAreaPadding.left + chartWidth, yPos); ctx.setLineDash([5, 5]); ctx.strokeStyle = '#eee'; ctx.stroke(); ctx.setLineDash([]); } ctx.fillText('Cost ($)', chartAreaPadding.left - 40, chartAreaPadding.top + chartHeight / 2); // --- Draw X-axis Labels and Title --- ctx.textAlign = 'center'; ctx.textBaseline = 'top'; var xAxisLabelCount = years.length; for (var i = 0; i < years.length; i++) { var xValue = chartAreaPadding.left + chartWidth * (i / (xAxisLabelCount - 1)); ctx.fillText('Year ' + years[i], xValue, canvas.height - chartAreaPadding.bottom + 10); } ctx.fillText('Year', chartAreaPadding.left + chartWidth / 2, canvas.height - chartAreaPadding.bottom + 40); // --- Draw Data Series --- // Cumulative Cost Line ctx.beginPath(); ctx.moveTo(chartAreaPadding.left, chartAreaPadding.top + chartHeight); // Start point for Year 1 calculation ctx.setLineDash([]); // Solid line ctx.strokeStyle = '#004a99'; // Primary color ctx.lineWidth = 2; for (var i = 0; i < years.length; i++) { var xPos = chartAreaPadding.left + chartWidth * (i / (xAxisLabelCount - 1)); var yPos = chartAreaPadding.top + chartHeight - (chartHeight * (cumulativeCosts[i] / maxCost)); if (i === 0) { ctx.moveTo(xPos, yPos); } else { ctx.lineTo(xPos, yPos); } } ctx.stroke(); // Draw dots for cumulative cost ctx.fillStyle = '#004a99'; for (var i = 0; i < years.length; i++) { var xPos = chartAreaPadding.left + chartWidth * (i / (xAxisLabelCount - 1)); var yPos = chartAreaPadding.top + chartHeight - (chartHeight * (cumulativeCosts[i] / maxCost)); ctx.beginPath(); ctx.arc(xPos, yPos, 4, 0, Math.PI * 2); ctx.fill(); } // Annual Operating & Fixed Costs Line (as a constant horizontal line) ctx.beginPath(); ctx.setLineDash([5, 5]); // Dashed line ctx.strokeStyle = '#28a745'; // Success color ctx.lineWidth = 2; var yPosAnnual = chartAreaPadding.top + chartHeight - (chartHeight * (annualOperatingAndFixedCosts / maxCost)); ctx.moveTo(chartAreaPadding.left, yPosAnnual); ctx.lineTo(chartAreaPadding.left + chartWidth, yPosAnnual); ctx.stroke(); // Draw dot for annual cost line ctx.fillStyle = '#28a745'; for (var i = 0; i < years.length; i++) { ctx.beginPath(); ctx.arc(chartAreaPadding.left + chartWidth * (i / (xAxisLabelCount - 1)), yPosAnnual, 4, 0, Math.PI * 2); ctx.fill(); } // --- Draw Legend --- ctx.fillStyle = '#333'; ctx.font = '14px Segoe UI'; ctx.textAlign = 'left'; // Cumulative Cost Legend Item ctx.fillStyle = '#004a99'; // Color for line ctx.fillRect(chartAreaPadding.left + chartWidth * 0.1, canvas.height - chartAreaPadding.bottom * 0.8, 15, 3); // Line swatch ctx.fillStyle = '#333'; ctx.fillText('Total Cumulative Cost', chartAreaPadding.left + chartWidth * 0.1 + 25, canvas.height - chartAreaPadding.bottom * 0.8 + 7); // Annual Costs Legend Item ctx.setLineDash([5, 5]); // Dashed line style ctx.strokeStyle = '#28a745'; // Color for line ctx.lineWidth = 2; ctx.beginPath(); ctx.moveTo(chartAreaPadding.left + chartWidth * 0.4, canvas.height - chartAreaPadding.bottom * 0.8); ctx.lineTo(chartAreaPadding.left + chartWidth * 0.4 + 15, canvas.height - chartAreaPadding.bottom * 0.8); ctx.stroke(); ctx.fillStyle = '#333'; ctx.fillText('Annual Operating & Fixed Costs', chartAreaPadding.left + chartWidth * 0.4 + 25, canvas.height - chartAreaPadding.bottom * 0.8 + 7); ctx.setLineDash([]); // Reset line dash // Chart Title ctx.fillStyle = '#004a99'; ctx.font = 'bold 18px Segoe UI'; ctx.textAlign = 'center'; ctx.fillText('Estimated Total Cost Over 5 Years', canvas.width / 2, chartAreaPadding.top / 2); } function calculateCosts() { var purchasePriceInput = document.getElementById('purchasePrice'); var fuelEfficiencyInput = document.getElementById('fuelEfficiencyL100km'); var annualDistanceKmInput = document.getElementById('annualDistanceKm'); var fuelPricePerLitreInput = document.getElementById('fuelPricePerLitre'); var omvicFeeInput = document.getElementById('omvicFee'); var licensingFeeInput = document.getElementById('licensingFee'); var insuranceEstimatePerYearInput = document.getElementById('insuranceEstimatePerYear'); var maintenanceEstimatePerYearInput = document.getElementById('maintenanceEstimatePerYear'); var purchasePrice = parseFloat(purchasePriceInput.value); var gasType = document.getElementById('gasType').value; var fuelEfficiency = parseFloat(fuelEfficiencyInput.value); var annualDistanceKm = parseFloat(annualDistanceKmInput.value); var fuelPricePerLitre = parseFloat(fuelPricePerLitreInput.value); var omvicFee = parseFloat(omvicFeeInput.value); var licensingFee = parseFloat(licensingFeeInput.value); var insuranceEstimatePerYear = parseFloat(insuranceEstimatePerYearInput.value); var maintenanceEstimatePerYear = parseFloat(maintenanceEstimatePerYearInput.value); var hstRate = 0.13; var hst = 0; var annualFuelCost = 0; var oneTimeCosts = 0; var annualOperatingCosts = 0; var annualFixedCosts = 0; var totalFirstYearCost = 0; var allValid = true; // Validation: Purchase Price is mandatory if (!validateInput('purchasePrice', 'purchasePriceError')) allValid = false; // Fuel efficiency is optional for electric/hybrid if not specified if (gasType !== 'electric' && gasType !== 'hybrid') { if (!validateInput('fuelEfficiencyL100km', 'fuelEfficiencyL100kmError')) allValid = false; if (!validateInput('annualDistanceKm', 'annualDistanceKmError')) allValid = false; if (!validateInput('fuelPricePerLitre', 'fuelPricePerLitreError')) allValid = false; } else { // For electric/hybrid, if user enters values, validate them. Otherwise, assume 0 fuel cost. if (fuelEfficiencyInput.value !== '') { if (!validateInput('fuelEfficiencyL100km', 'fuelEfficiencyL100kmError')) allValid = false; } if (annualDistanceKmInput.value !== '') { if (!validateInput('annualDistanceKm', 'annualDistanceKmError')) allValid = false; } if (fuelPricePerLitreInput.value !== '') { if (!validateInput('fuelPricePerLitre', 'fuelPricePerLitreError')) allValid = false; } } // OMVIC fee validation if (!validateInput('omvicFee', 'omvicFeeError')) allValid = false; // Licensing fee validation if (!validateInput('licensingFee', 'licensingFeeError')) allValid = false; // Insurance validation if (!validateInput('insuranceEstimatePerYear', 'insuranceEstimatePerYearError')) allValid = false; // Maintenance validation if (!validateInput('maintenanceEstimatePerYear', 'maintenanceEstimatePerYearError')) allValid = false; if (!allValid) { document.getElementById('results').classList.remove('visible'); return; } // Calculations hst = purchasePrice * hstRate; oneTimeCosts = purchasePrice + hst + omvicFee; // Calculate annual fuel cost only if relevant inputs are provided and valid if (gasType !== 'electric' && gasType !== 'hybrid') { // Ensure all necessary inputs for fuel cost are valid numbers if (!isNaN(fuelEfficiency) && fuelEfficiency > 0 && !isNaN(annualDistanceKm) && !isNaN(fuelPricePerLitre)) {
annualFuelCost = (annualDistanceKm / 100) * fuelEfficiency * fuelPricePerLitre;
} else {
// If inputs are missing or invalid for non-electric/hybrid, warn or set to 0
annualFuelCost = 0; // Default to 0 if calculation is not possible
}
} else {
// For electric/hybrid, fuel cost is generally considered 0 here, or derived from kWh/100km if that input were available
annualFuelCost = 0;
}

annualOperatingCosts = annualFuelCost + maintenanceEstimatePerYear;
annualFixedCosts = licensingFee + insuranceEstimatePerYear;

totalFirstYearCost = oneTimeCosts + annualOperatingCosts + annualFixedCosts;

// Update Results Display
document.getElementById(‘primary-result’).innerText = ‘$’ + totalFirstYearCost.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘oneTimeCosts’).innerText = ‘$’ + oneTimeCosts.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘annualOperatingCosts’).innerText = ‘$’ + annualOperatingCosts.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘annualFixedCosts’).innerText = ‘$’ + annualFixedCosts.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });

// Update Table
document.getElementById(‘tableFuelCost’).innerText = ‘$’ + annualFuelCost.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘tableLicensingCost’).innerText = ‘$’ + licensingFee.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘tableInsuranceCost’).innerText = ‘$’ + insuranceEstimatePerYear.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById(‘tableMaintenanceCost’).innerText = ‘$’ + maintenanceEstimatePerYear.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });

document.getElementById(‘results’).classList.add(‘visible’);

// Update Chart using native canvas drawing
drawNativeChart(purchasePrice, hst, omvicFee, annualFuelCost, licensingFee, insuranceEstimatePerYear, maintenanceEstimatePerYear);
}

// Initial placeholder for chart if it hasn’t been drawn yet.
// A dummy call to drawNativeChart with zero values could initialize it,
// or simply ensure it gets drawn on the first actual calculation.
// Let’s ensure it’s drawn upon first calculation.

// Ensure chart canvas is responsive
window.addEventListener(‘resize’, function() {
// Re-calculate and re-draw chart on resize if needed, or rely on CSS `max-width: 100%`
// For native canvas, explicit redraw might be needed if container size changes significantly.
// Let’s defer redraw until actual calculation updates.
var canvas = document.getElementById(‘costBreakdownChart’);
if(canvas) {
canvas.width = canvas.clientWidth; // Update canvas width on resize
// You might need to re-trigger calculation or redraw here if chart appearance depends heavily on container width beyond max-width: 100%
// For simplicity, we’ll assume CSS handles basic responsiveness and redraw happens on calculation change.
}
});



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