Couple carjacked in Sydney's west

A 70-year-old man and a 59-year-old woman have been forced from their vehicle in a car-jacking in Sydney's west.

The pair were parked on a Campsie street on Sunday afternoon when a man threatened them and demanded they get out of their Holden Commodore, police say.

The thief then drove off in the car, which has the registration AP43DU.