The True Cost of Owning a Used Car
The purchase price is just the start. A $12,000 car can cost $25,000 over 5 years — or $18,000, depending on which car you choose. Here's how to calculate the real number.
Example: 2020 Toyota Camry vs 2020 Ford Explorer (same $18,000 price)
| Cost | Camry | Explorer |
|---|---|---|
| Purchase price | $18,000 | $18,000 |
| 5-yr depreciation | −$7,200 | −$9,900 |
| 5-yr fuel (12k mi/yr) | −$8,400 | −$12,600 |
| 5-yr insurance (est.) | −$6,000 | −$8,000 |
| 5-yr maintenance | −$3,500 | −$5,500 |
| 5-year total cost | $25,100 | $36,000 |
Estimates only. Fuel at $3.50/gal; Camry 32 MPG combined, Explorer 22 MPG. Depreciation 8% vs 11% annually. Insurance and maintenance industry averages.
The 6 components of true ownership cost
📉 Depreciation
Even used cars lose value. A $15,000 car losing 12% per year loses ~$1,800 in year one. Depreciation is often the biggest cost of ownership — yet most buyers ignore it because it doesn't show up as a bill.
- →Toyota, Honda, and Mazda depreciate slower than average — lower long-term cost of ownership.
- →Luxury brands depreciate fast, which is why a 3-year-old BMW can look affordable — until you factor in what it'll be worth (and cost to fix) in 5 years.
- →If you plan to own the car for 7+ years, depreciation matters less. If you'll sell in 2–3 years, it matters a lot.
⛽ Fuel
At 12,000 miles/year and $3.50/gallon, a 25 MPG car costs ~$1,680/yr in fuel. A 17 MPG truck costs ~$2,470/yr — nearly $800 more. Over 5 years: $4,000 more on fuel alone.
- →EPA fuel economy data is published for every make/model/year. Use the combined MPG figure for real-world planning.
- →Our decision reports include annual fuel cost estimates based on EPA data and average US fuel prices.
- →Hybrid and EV variants of the same model can save $500–$1,500/yr in fuel costs.
🛡️ Insurance
Insurance varies dramatically by make, model, year, your age, driving record, location, and coverage level. Sports cars and luxury vehicles cost significantly more to insure. Get actual quotes before you buy.
- →Get insurance quotes for the specific car before committing — this should be part of your budget calculation.
- →Older cars with lower market value may not need comprehensive coverage, reducing premiums.
- →Safety ratings (NHTSA 5-star, IIHS Top Safety Pick) can reduce premiums by 5–15%.
🔧 Maintenance
Routine maintenance (oil changes, tyre rotation, air filters, wipers) runs $500–$800/yr on most cars. Scheduled major services (timing belt/chain, brake fluid, spark plugs) add $200–$600 every 30k–60k miles. Reliability data predicts how often unscheduled repairs occur.
- →Japanese brands (Toyota, Honda, Mazda, Subaru) tend to have lower unscheduled repair costs than German or domestic brands.
- →High-mileage cars need more maintenance budget — factor in an extra $500–$1,000/yr for cars over 100k miles.
- →Avoid models known for expensive unique components: timing chains on certain engines, turbos, dual-clutch transmissions on early models.
💳 Financing
If you're financing, the interest cost is real money. A $15,000 loan at 7% for 48 months costs $2,250 in interest over the loan term. Always calculate the total cost of the loan, not just the monthly payment.
- →A $250/month payment sounds affordable. That's $15,000 over 5 years — on top of the principal.
- →Get pre-approved at your bank or credit union before visiting a dealer. Dealer financing often carries higher rates.
- →For cars over 5–7 years old, lenders may require a higher down payment or charge higher rates.
📋 Registration & taxes
Registration fees vary by state. Some states (California, Oregon) charge vehicle license fees based on the car's value — a $20,000 car might have $400+/yr in annual registration vs. $50–$100 in other states. Don't forget sales tax on purchase.
- →Check your state's DMV for annual registration fee structure before buying.
- →Sales tax is typically 6–10% of purchase price — a $15,000 car costs $900–$1,500 in sales tax upfront.
The quick back-of-envelope formula
Subtract the estimated resale value at the end of your ownership period to get your net cost.
Our decision reports use EPA fuel data, reliability scores, and market depreciation curves to estimate the full ownership cost for any car you're evaluating.
Frequently Asked Questions
What is the cheapest car to own long-term?▾
The Toyota Corolla, Honda Civic, and Mazda3 consistently rank as the lowest total-cost-of-ownership compact cars. For larger vehicles, the Toyota Camry and Honda Accord win in the midsize sedan category. For SUVs, the Toyota RAV4 and Honda CR-V outperform most alternatives in long-term cost. In all cases, fuel efficiency, low unscheduled repair frequency, and slow depreciation are the main drivers.
Is it cheaper to buy new or used?▾
Used is almost always cheaper in total cost, primarily because new cars depreciate 15–25% in the first 2 years. Buying a 2–3 year old version of the same car lets someone else absorb the sharpest depreciation. The exception: if you use the car for 10+ years, the difference matters less, and a new car may come with better financing rates and warranty coverage.
How much should I budget for unexpected repairs?▾
As a rule of thumb: budget $500–$1,000/yr for unexpected repairs on a reliable used car in good condition. For higher-mileage cars (100k+), budget $1,000–$2,000/yr. For brands with elevated complaint rates, add 25–50% more. An emergency car fund of $2,000–$3,000 is a sensible cushion so a single repair doesn't become a financial crisis.