Police were called to Birling Gap on Saturday (June 22) after a member of the public reported seeing a car over the cliffs.
Emergency services, including the coastguard, attended the scene at 9.20am.
The coastguard helicopter recovered the body of a woman, not thought to be from Sussex, from a black Peugeot car at around 10.20am.
She was taken to the Royal Sussex County Hospital, in Brighton, where she was pronounced dead.
The incident is not being treated as suspicious and has been referred to the coroner’s officer.