If your vehicle has been towed and impounded, you will need to confirm it has been towed, and pay all outstanding tickets and fees before it will be returned to you.
For more information on getting back your car, see:
In some cases the Philadelphia Police Department will relocate cars without ticketing or impounding them. Your car may get relocated if it is parked in a Temporary No Stopping area. If you believe your car has been relocated, call the police district of the area where your car was parked.