The gift tax is the responsibility of the eligible person receiving the motor vehicle. Edit, sign, and share vehicle gift letter online.No need to install software, just go to DocHub, and sign up instantly and for free. 1. Enter the date of the gift. This document serves as an affidavit for the gift transfer of a motor vehicle. 1. Enter the date of the gift. The gift letter should include the make, model, year, and VIN (vehicle identification number) of the car. How to fill out the Affidavit of Motor Vehicle Gift Transfer Form 14-317? In order for them to register the vehicle in their name, you will both have to fill out an Affidavit of Motor Vehicle Gift Transfer form. On the bill of sale template, where the dollar amount is listed, write "gift" in the allotted space.