Which of the following is NOT considered proof of ownership for a motor vehicle in Colorado?

The signed Monroney Label is not considered proof of ownership for a motor vehicle in Colorado. The Monroney Label, which is also known as the window sticker, provides important information about the vehicle, including its make, model, pricing, and equipment. However, it does not serve as a legal document that confirms ownership of the vehicle.

On the other hand, the certificate of title is the primary legal document that evidences ownership of a vehicle. The bill of sale serves as a contract between the buyer and seller, detailing the transfer of ownership, while the manufacturer's statement of origin is a document that certifies the vehicle's origin from the manufacturer and is often required for registering the vehicle. These documents collectively provide proof of ownership, whereas the Monroney Label is primarily informational and does not confer ownership rights.