I have multiple motor vehicles that i paid taxes on and it doesn't give me the option to include a second or third vehicle.

[xmasbaby0]

Do you plan to upgrade to Deluxe in order to itemize?  Sales tax is an itemized deduction and you are posting from Free, which does not support itemizing.

[Patrice]

You can add up the total amount of all the motor vehicles taxes paid and enter the combined total amount you paid in the appropriate section.