Mileage limits appear in two places: the company's acceptance statement and the contract you sign. A quote may show neither. Check both before you pay.
Name which test applies
An acceptance line can test the odometer reading on the day you apply, the reading on the day the contract starts, or the reading at the time of a first claim. Those are three different tests, and they matter on a car that sits close to a line. Ask which one the company uses and get the answer in writing.
Check the age limit beside it
Many contracts set a vehicle age limit next to the mileage limit. Read both. A car can clear the mileage line and still fail the age line, and that failure often shows up only if you look for it at the quote stage.
Ask the seller to point to the sentence
If the answer is spoken, ask the seller to show you the sentence on the page. The contract you sign is the document that counts, so a spoken answer that is not in the paper should be treated as unconfirmed. Ask for the line in the quote or the contract before you pay anything.
Bring these to the call
Have the odometer reading written down, the registration year, the vehicle identification number, and the date of the last service visit. Ask the company what it does with each one. A company that cannot say which reading it uses has not answered the question.
For how published terms are compared on this site, read the scoring rubric. For the difference between listed-parts and exclusionary wording, read the comparison of the two styles.