Total Cost of Ownership Calculator

What it does

Project the real 5-year cost of car ownership beyond the sticker price. Tool itemizes: depreciation (40-50% of TCO), fuel ($1,500-3,000/yr × 5), insurance ($1,200-2,400/yr × 5), maintenance + repairs ($600-1,500/yr × 5), registration + taxes ($200-800/yr × 5), and financing interest if applicable. Output: 5-year grand total and per-mile cost. A $30,000 sedan typically has $35,000-45,000 5-year TCO. A $50,000 luxury SUV often hits $70,000-90,000 TCO.

Depreciation is almost always the largest cost. A new car loses ~50% of value over 5 years; that $15K loss on a $30K car dwarfs all fuel and maintenance combined. Buying 2-4 year old used skips most of the depreciation while keeping similar fuel and insurance costs — typical 5-year TCO drops 30-40% vs new. Other large levers: fuel economy (35 vs 25 MPG = $2,500 savings over 5 years at 12K miles/yr), insurance (shop annually; can save $300-800/year), and repairs (extended warranties rarely worthwhile; AAA + Apple Pay car services beat most dealer service plans).

Hidden costs that surprise new owners: comprehensive + collision insurance jumps 15-40% on new vs older cars; first-year registration in property-tax states (Virginia, California, Connecticut) can hit $500-1,500 for newer cars; tires need replacement every 40-60K miles ($500-1,500/set); brakes every 50K miles ($300-600 per axle). Used cars 5-7 years old often have lowest TCO/mile because they’ve shed depreciation but haven’t hit major-repair territory yet.

How to use it

1. Enter purchase price, down payment, financing rate and term.
2. Enter expected annual miles (12K-15K typical commuter; 20K+ heavy use).
3. Enter MPG (or kWh/100mi for EVs) and current fuel/electricity price.
4. Enter annual insurance, maintenance estimate (industry average $0.06-0.10/mile), and depreciation rate.
5. Read 5-year grand total and per-mile cost. Compare across vehicles considered.

When to use this tool

• Vehicle purchase comparison — sticker price alone is misleading; TCO captures real cost.
• Buy vs lease analysis — TCO over 5-year hold lets you compare keep-it-forever vs replace-every-3-years.
• EV vs ICE comparison — TCO captures fuel/electricity savings that flatten higher initial price.
• Fleet-buying decisions — companies use TCO/mile to allocate vehicle costs across departments.

When not to use it

• Classic/collector vehicle ownership — appreciation, garage costs, specialty insurance not modeled.
• Commercial / Uber / Lyft use — higher mileage, faster depreciation, commercial-insurance premiums require specialized TCO models.
• Vehicles you only keep 1-2 years — depreciation dominates so heavily that 5-year TCO doesn't apply.
• Comparing across countries — fuel taxes, insurance regulations, registration fees vary too dramatically.

Common use cases

• Buyer comparing $35K Honda Accord vs $45K Tesla Model 3 over 7 years.
• Family deciding between buying new vs leasing then buying used at lease-end.
• Comparing keeping a paid-off 10-year-old car (low TCO from no depreciation) vs replacing.
• Calculating expense-reimbursement rate per mile for business vehicle use.