Legal Question in Wills and Trusts in Pennsylvania

The answer is, it depends. Where did your father live at the time of his death? Did he have a will? If so, did the will say anything? Did your father have a wife who survived him? Besides you and your sister, are there any other children? What else did your father own that was a probate asset? Did your father have any debts? Was the car encumbered by any liens or still being financed?

Technically, if the car was in the name of both your father and your sister, then 1/2 of the car is already hers and 1/2 of the value goes into the estate. What happens with the car will depend on the other stuff, but the logical thing would be for your sister to get the car and be credited with 1/2 of the value of the car when she is distributed her share of the estate.