This is incorrect. It's easy to find the actual statement required: https://eforms.com/images/2017/06/Federal-Odometer-Disclosur...

> I, ______________________ (SELLER’S NAME, PRINT) state that the odometer now reads ______________________ miles (NO TENTHS) and to the best of my knowledge that it reflects the actual mileage of the vehicle described below, unless one of the following statements is checked.

The seller is only strongly asserting what the odometer reads. If the seller doesn't know anything about that vehicle, then "to the best of [their] knowledge", that reflects the actual mileage.

Also to clarify, none of this is sworn, or "under penalty of perjury"