You suggested "writ of attachment," and that's right if the original FR is talking about the actual court order declaring that someone's car has to be forfeited in order to satisfy a debt: a writ of attachment is "a court order directing a sheriff (or other law enforcement officer) to seize property of a defendant which would satisfy a judgment against that defendant."
https://legal-dictionary.thefreedictionary.com/writ of attac... If the original FR is talking about the
record of that court order that shows up on their car's title, "lien" is the best word.
Those aren't synonymous with a "notice of seizure," which is the notice that your car actually has been seized. Parties who issue "notices of seizure" include anyone who has the legal right to repossess cars -- so a car repo company has to provide to a car's nominal owner in order to inform them that the reason their car has disappeared is that XYZ repo company took it to satisfy a debt (
https://minneapoliscrimdefenselawyer.com/understanding-vehic... or the state has to provide it to the owner to explain why the state took the car:
https://minneapoliscrimdefenselawyer.com/understanding-vehic...