The woman, who is thought to be in her 40s, was struck by the vehicle on Bensham Road at about 19:00 BST on 22 April.
A spokeswoman for Northumbria Police said the pedestrian was pronounced dead after being taken to hospital and the coroner will be informed.
The driver of the car, a woman in her 50s, was not injured in the collision. Police are appealing for witnesses.
A female pedestrian has died after being hit by a car in Gateshead.