Alderney's lifeboat was called out to search for possible injured people after a car was found at the bottom of cliffs below the Giffoine.
The Roy Barker I and its boarding boat were called into action at 1235 BST and asked to search the south-west coast.
Alderney Police raised the alarm after reports that a stolen green Rover Metro had been pushed or driven over the steep 300ft (90m) cliffs.
No-one was found and Alderney Police have since confirmed the car was empty.
Both boats were back in Braye Harbour by 1320 BST.