How to Sell a Car With a Broken Odometer or Unknown Mileage

Our sell my junk car guide covers selling an older, damaged or non-running car directly to another person. This guide focuses on uncertain mileage. It is different from selling a high-mileage car, where the mileage itself is known.

Write down the display reading and its limits

Record whether the display is blank, stuck at a number, intermittent or replaced. If a number is visible, photograph it and note the date. Do not describe that number as the car's actual lifetime mileage when you know it is not.

Create a simple record with these entries:

• Current displayed reading, or a statement that it cannot be read.
• When the problem was first noticed and what was observed.
• Last documented reading before the problem, with its date and source.
• Whether the car continued to be driven afterward, if known.
• Any instrument-cluster or odometer repair or replacement records.
• What you cannot establish about the total distance traveled.

An old invoice records a reading at that time. It does not prove how far the car traveled afterward. A history report may help identify records to investigate, but do not use an estimate to turn unknown mileage into an exact figure.

Confirm the required mileage disclosure

NHTSA's disclosure update explains the extended federal disclosure period for model-year 2011 and newer vehicles: generally the first 20 years. Older model years and other exemptions require checking the applicable rules for the actual vehicle. Do not assume that every old car is exempt or that an exemption makes an inaccurate ad acceptable.

Ask your state motor vehicle agency how the displayed reading, unknown mileage, title notation and required signatures should be recorded. Tell it whether the display is blank, stopped, replaced or showing a rollover. Ask which title space or official form must be used and how to correct an existing error.

As an Oregon-specific example, Oregon DMV's guidance distinguishes an unreadable digital display from a stuck odometer and gives different recording instructions. Do not copy one state's notation or a generic online form into a different state's transaction without checking.

An explanation in the ad or a bill of sale does not automatically replace the required mileage disclosure. Our sale-document checklist and bill-of-sale guide help organize the other paperwork.

Keep repair records without changing the history

Ask a qualified shop to diagnose the display problem and explain the proposed repair. Find out what mileage information can be established, which records will document the work and whether special recording requirements apply. Do not alter or reset the reading to make the car easier to sell.

Get a written estimate before authorizing work. The FTC's repair guidance explains the work, parts, labor and extra-work approval that an estimate should address. Keep the final invoice, the old and new displayed readings where documented, and the repair date.

Fixing the display does not by itself establish previously unknown lifetime mileage. Preserve the uncertainty and the required notation unless the responsible agency confirms the correct process for your records.

Research a price that reflects the uncertainty

Compare the same model and equipment with similar condition and title history. Keep documented-mileage examples separate from cars advertised with unknown mileage. A low number on a replacement display does not justify pricing the car as a verified low-mileage example.

Show interested buyers the service and inspection evidence available. A current inspection can help them assess condition, but it is not proof of every mile traveled. Give the buyer room to obtain an independent assessment.

Record actual offers and the seller-paid costs of diagnosis, repairs, inspection and collection. Our junk-car pricing guide and repair-before-selling guide help compare the money you could keep. Avoid a fixed unknown-mileage discount or a promised price increase from repairing the display.

Make the mileage uncertainty easy to see in the ad

Put it near the beginning of the description and keep every mileage field consistent with the explanation. Never enter zero to mean unknown or invent a number to get a listing accepted. If a listing form cannot accurately represent the situation, ask the site's support team how to proceed before submitting it.

Adapt this blank outline:

“[Year make model], [city and state]. Odometer: [displayed reading or unreadable]. Actual mileage: [what is known or unknown]. Problem first noticed: [date and observation]. Records available: [dated readings and repairs]. Current condition: [facts]. Title and mileage disclosure: [confirmed status]. Asking price: [amount].”

This is a description template, not an official disclosure form. Remove unrelated personal information before sharing records. Our car-photo checklist helps show the actual car and relevant display photographs.

Complete the paperwork before release

Let the buyer review the mileage explanation and supporting records before agreeing on the sale. Follow the agency's instructions for the required documents and signatures. Use our payment guide and pickup checklist to plan the handoff.

When the records and transaction requirements are ready, prepare your listing and start a CarTruvo listing. You communicate the car's condition and mileage limits directly to interested buyers.