How To Selling a Vehicle A title is required to sell a vehicle in Colorado.
Some states use titles which require notarization of the seller's signature.
The signature of the seller must match the name of the owner exactly as it is printed on the title. The buyer then must present the title to the motor vehicle office in order to complete the transfer. In addition to the properly signed and notarized title, you, as the seller, should give the buyer a bill of sale which contains the perjury clause. Bill of sale forms are available either at the motor vehicle office, or by clicking here on Bill of Sale. Remember, if you are located within an emission area, it is also the seller's responsibility to provide proof of emission.