The used-car evidence file: prepare before viewing

Organize photographs, invoices and odometer readings into a file that helps you ask better questions.

Collect vehicle-specific evidence

Request identification details, year, trim and available service history. Label each claim by its source: document, invoice, inspection or spoken description. These are not equally strong evidence. Prepare a checklist for the viewing without publishing the owner’s personal documents.

Build an odometer timeline

Arrange dated readings chronologically and look for inconsistencies. NHTSA recommends comparing mileage with maintenance and inspection records and considering the vehicle’s condition when tampering is suspected. A discrepancy warrants an explanation and inspection; it does not by itself prove fraud.

Distinguish servicing from accident repairs

Ask what work was done, why and by whom. A short invoice may not explain the repair’s scope. List questions for the professional inspecting the vehicle. Photographs and promises of inexpensive repairs cannot replace an independent inspection.

Leave unknowns visible

Use three columns: confirmed, needs evidence and unavailable. Do not fill gaps with guesses. If missing history prevents a sensible estimate of upcoming costs, allow a budget margin or defer the decision until the uncertainty is resolved.

Your next step

Use the guide to organize your decision, then open the related tool.