Compare cheap cars by estimating what each will cost over the same ownership period and mileage—not by choosing the lowest advertised price or monthly payment. Add the out-the-door price and loan interest to expected running costs, then subtract the car’s estimated resale value. The result is a more useful comparison, but it is still an estimate: insurance, repairs, fees, fuel use, and resale depend on the specific car, buyer, and location.
Set the same comparison period and driving assumptions
Choose a holding period and annual mileage for every candidate before entering numbers. Use the same driving mix and fuel-price assumption, too; otherwise, a car may look cheaper simply because it was evaluated under easier conditions.
Kelley Blue Book says its five-year cost-to-own fuel estimate uses 15,000 miles per year. That is KBB’s calculator assumption, not a recommended or universal mileage figure. Replace it with your expected annual driving and calculate each candidate over the same period. Kelley Blue Book’s cost-of-ownership explanation describes its methodology.
Start with the actual purchase and financing cost
Ask each seller for a written out-the-door price that includes taxes and fees. An advertised price may omit charges, while a monthly payment can hide the total price or reflect a longer loan. The Federal Trade Commission recommends getting the information in writing so buyers can compare offers, spot add-ons, and focus on total cost rather than payment size. See the FTC’s financing and leasing guidance.
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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →For a financed car, add the interest you expect to pay under the actual loan terms. Compare offers using the amount paid over the loan, not just the monthly payment; the Consumer Financial Protection Bureau explains what to compare in its auto-loan guidance. Do not count loan principal twice: the out-the-door price already represents the car’s acquisition cost, so add interest and fees attributable to financing, not the principal again.
Estimate each car’s costs while you own it
Include the expenses that will occur during the chosen period, using candidate-specific quotes or estimates where possible. KBB’s cost-of-ownership explanation and CFPB guidance identify categories such as fuel, insurance, maintenance, repairs, taxes, and fees. CFPB’s summary is that the true cost combines the up-front vehicle cost with expenses such as interest, insurance, and routine maintenance. See its car-loan affordability guidance.
- Fuel: Estimate consumption using your mileage, driving mix, and a consistent fuel-price assumption.
- Insurance: Request a quote for each exact vehicle with the same coverage and deductible. Your premium depends on your profile and location.
- Maintenance and repairs: Estimate routine service and likely repairs over the holding period. For a used car, revise the estimate using inspection findings and written repair estimates rather than assuming that a low purchase price means low repair costs.
- Taxes and registration: Check the amounts that apply where you live and how they recur during your ownership period.
These costs cannot be settled by a generic average for every buyer. KBB’s calculator can help organize estimates, but its figures rely on assumptions; they are not a personal forecast. The CFPB’s loan comparison guidance also identifies insurance, maintenance, repairs, fuel, taxes, and fees as ownership costs.
For used cars, account for condition before comparing prices
Age and mileage alone do not reveal deferred maintenance. Compare equivalent candidates’ service histories, vehicle history, recall status, and inspection findings. The FTC recommends checking history and recalls and having a used car inspected; use the findings to update repair estimates and, where appropriate, negotiate. Its used-car buying guidance explains these checks.
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An inspection is more useful than treating a diagnostic-code reader as a forecast of future costs: an OBD2 scanner may read codes, but it does not replace a qualified inspection or establish what repairs a car will need over time.
Subtract expected resale value to account for depreciation
Estimate what each car may be worth at the end of the same holding period, then count the difference between acquisition cost and resale value as the cost of the car itself. Resale estimates are uncertain, so record the source and assumptions rather than presenting the result as guaranteed.
KBB’s calculator illustrates how depreciation and cash expenses can both matter: it shows an example with a $35,998 five-year ownership cost, including $13,365 in depreciation and $22,633 in out-of-pocket expenses. The example compares vehicles that had the same $19,272 purchase price five years earlier; it is not a current benchmark for cheap cars. See the KBB cost calculator.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Build a consistent worksheet and calculate the result
Use one row per candidate and apply the same assumptions across the comparison. A practical total is: out-the-door price + loan interest + fuel + insurance + taxes and registration + routine maintenance + inspection-based repair estimate − expected resale value. This counts purchase principal once and treats depreciation as acquisition cost less resale, rather than adding depreciation on top of the full purchase price.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problems| Candidate | Out-the-door price | Total loan interest | Fuel | Insurance | Taxes and registration | Maintenance | Repairs | Expected resale value | Total ownership cost | Monthly equivalent | Cost per mile |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Car A | Your quote | From loan terms | Estimate | Vehicle-specific quote | Local estimate | Estimate | Inspection-based estimate | Estimate | Calculate | Total ÷ months | Total ÷ expected miles |
| Car B | Your quote | From loan terms | Estimate | Vehicle-specific quote | Local estimate | Estimate | Inspection-based estimate | Estimate | Calculate | Total ÷ months | Total ÷ expected miles |
For the monthly equivalent, divide the full-period total by the number of months in your comparison period. For cost per mile, divide it by the miles you expect to drive during that period. These are budgeting views of the same total, not substitutes for it: a low monthly figure or per-mile number can mislead if important costs are omitted.
Use the comparison as an estimate, not a promise
The strongest comparison is the one that makes its assumptions visible. Keep the period, mileage, driving mix, fuel price, insurance coverage and deductible, loan terms, and local fees consistent. For used cars, update the repair estimate with the actual history and inspection. No generic statistic establishes the total cost of owning all “cheap cars”; the result belongs to the particular vehicle and buyer.
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