If you already own a Limited Liability Company (LLC) in the United States, perhaps in the state of Delaware, you may be wondering whether you can use this LLC to register your vehicle.
LLC ownership and vehicle ownership are managed by the States, not the US national government.
A Delaware LLC cannot be used to register a vehicle in Montana because, from Montana's perspective, a Delaware LLC is a foreign entity. It does not have a presence in Montana, and therefore cannot register a vehicle in Montana.
In short, if you own an LLC in a state other than Montana, you cannot use it to register a vehicle in Montana.