Yes - if tax is based on value of car, and at general sales tax rate for initial sale. (Not all States tax thusly) ...
The initial sales tax paid would be deductible only if you deducted State sales taxes instead of income tax withheld on your itemized return (not actually as Personal Property Tax). PPT would be the annual license fee portion based on vehicle value - and not all States have such fees. For info, see http://www.dmv.org/registration-renewal.php
