Visit or instruct the vehicle’s seller to visit the website for your state’s department of motor vehicles. Many DMV sites have a fillable power-of-attorney form online that the seller may complete and print from his home computer. These power-of-attorney forms, specific to the transaction of conveying the motor vehicle, may require the listing of the auto's make, model, VIN number, license plate number and even odometer mileage. Instead of completing the form online, print the form for the principal or seller to complete by hand. A pre-existing general power of attorney appointing you as attorney-in-fact may be used if it authorizes the transfer of vehicle titles.
Obtain the signed and completed power-of-attorney form from the seller of the vehicle. Some states may require that his signature be witnessed or notarized, or both, for the power of attorney to be effective.
Sign the seller’s name to the title as well as your own in the form “John Doe by and through his attorney-in-fact, Joe Smith.” Depending on your state’s requirements, the title transfer may need to be notarized or witnessed, or both.
Take the original signed title along with the original or certified copy of the power of attorney, as required by your state, to the local motor vehicle department. Present these documents to the clerk to complete the transfer and provide any additional information as required.