Police have been told the offenders entered the Waranga Drive home via a window and located the garage containing a white 2011 Audi sedan between 11:30pm and 12am.
The trio located the keys and stole the vehicle, with European registration plates VEH 789, which is yet to be located.
The occupants woke to find the vehicle was gone and other vehicles in the garage had been rifled through.
Detectives believe that the offenders may also be responsible for a number of attempted burglaries in the nearby area.
Investigators are appealing for anyone whose house was broken into overnight or found signs of an attempted break-in in the area to contact police.