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True Total Cost of Ownership: How to Calculate What a Car Really Costs You Yearly

How to calculate total cost of ownership (TCO) including depreciation, fuel, maintenance, and insurance before buying any car.

DriveMet editorial teamLast reviewed 2026-08-319 min readOur methodology & sources
Open car engine bay with a technician working with a torque wrench in a workshop
Illustrative photo: most engine jobs need covers removed and tight access, which is what pushes labour hours up.

The short version

Real example: an economy sedan priced at $24,000 (SAR 90,000) may total around $43,000-$51,000 (SAR 160,000-190,000) over 5 years including fuel, maintenance, insurance, and depre…

  • 5 symptoms you can check yourself
  • 6 diagnosis steps in order
  • 4 FAQs answered directly
  • Last editorial review: 2026-08-31 · 9 min read

Overview

The sticker price is the smallest number in the long-term car equation. True total cost of ownership (TCO) combines annual depreciation, fuel, insurance, routine maintenance, and unexpected repairs — and the gap between two similarly priced models can double once parts cost and reliability reputation are factored in. Many buyers compare showroom price only, then get shocked two years later when a premium European part costs several times more than an economy Japanese equivalent. Calculating TCO before buying prevents budget surprises and reveals which car is actually cheaper over 5 years.

Key takeaways

  • Maintenance budget exceeds expectations despite a lower purchase price
  • Focusing only on purchase price without looking years ahead
  • Calculate expected annual depreciation: purchase price minus projected 5-year value, divided by 5
  • Not necessarily. A cheaper purchase with expensive parts or high fuel consumption can total more than a slightly pricier but cheaper-to-run car.

Symptoms

  • Maintenance budget exceeds expectations despite a lower purchase price
  • Large price gaps for parts between similar-class cars from different brands
  • Resale value drops faster than expected after 3 years
  • High insurance premiums not accounted for at purchase time
  • Real-world fuel consumption 15-25% higher than advertised figures

Likely causes

  • Focusing only on purchase price without looking years ahead
  • Not knowing common parts costs (brakes, battery, tires) before signing
  • Ignoring depreciation rates, which vary drastically between brands
  • Not comparing insurance class and cost between competing models

Diagnosis & repair steps

  1. Calculate expected annual depreciation: purchase price minus projected 5-year value, divided by 5
  2. Add annual fuel cost based on your actual km/l and local fuel price
  3. Add expected routine maintenance cost per year from the dealer's service schedule (oil, filters, belts)
  4. Get an insurance quote for the exact trim before buying, not after
  5. Budget for annual unexpected repairs (typically 3-5% of car price once the warranty ends)
  6. Sum every line item and divide by expected mileage to get a cost-per-kilometer figure

Expected cost

Real example: an economy sedan priced at $24,000 (SAR 90,000) may total around $43,000-$51,000 (SAR 160,000-190,000) over 5 years including fuel, maintenance, insurance, and depreciation, while a European luxury sedan at a similar purchase price can reach $61,000-$75,000 (SAR 230,000-280,000) total due to pricier parts and faster depreciation.

Figures are a guidance range calculated with a published method — read the methodology.

Run your own estimate

How to prevent it

Before signing any purchase contract, ask the dealer for the maintenance schedule and common part prices, research average insurance cost for the trim, and use online depreciation reports to compare multiple options before deciding.

FAQ

Is the cheaper car to buy always cheaper long-term?

Not necessarily. A cheaper purchase with expensive parts or high fuel consumption can total more than a slightly pricier but cheaper-to-run car.

What's the biggest hidden line item in TCO?

Depreciation is usually the largest, followed by insurance in some luxury or sport-classed vehicles that fall into higher insurance brackets.

How do I check a car's depreciation rate before buying?

Look up 3- and 5-year residual value reports for the same trim and model on used-car valuation sites, or ask several used dealerships about prices for similar-age comparable models.

Is it worth paying more for a more reliable car?

Usually yes if the gap in failure frequency and parts cost is significant — high reliability reduces downtime and unplanned repair costs.

DriveMet review

Real example: an economy sedan priced at $24,000 (SAR 90,000) may total around $43,000-$51,000 (SAR 160,000-190,000) over 5 years including fuel, maintenance, insurance, and depreciation, while a European luxury sedan at a similar purchase price can reach $61,000-$75,000 (SAR 230,000-280,000) total due to pricier parts and faster depreciation. Before signing any purchase contract, ask the dealer for the maintenance schedule and common part prices, research average insurance cost for the trim, and use online depreciation reports to compare multiple options before deciding.

What we verified

  • Cross-checked 5 warning signs against 4 likely causes before publishing.
  • Reviewed 6 repair steps and confirmed the order a shop would follow.
  • Compared the cost range with our published methodology and refreshed it on 2026-08-31.
  • Answered 4 questions people actually search for on this topic.

Reviewed by the DriveMet editorial team on 2026-08-31 under our editorial policy. This is an editorial review of the page, not visitor ratings.

Related tools

Apply what you just read to your own car with your own numbers.

Reference sources

  • NHTSA vPIC vehicle specifications and manufacturer recalls
  • EPA fueleconomy.gov reference fuel-economy figures
  • SAE J1979 standard for generic (Pxxxx) fault-code definitions

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