Gwent Police said they are appealing for information following a burglary in Lansbury Park Caerphilly.
It happened just before midnight last night, Sunday 22nd October.
Two people forced their way into a flat on Maxton Court and demanded the victim's car keys.
The man was assaulted and received cuts to his head.
The two offenders made off with the car, a Peugeot 106, from outside the flat - it was later recovered nearby.
The offenders were both wearing hooded tops and masks.
The victim, a 46 year old man, was taken to the Royal Gwent Hospital and has since been released.
Anyone with any information is asked to call Gwent police on 101 quoting log 572 22/10/17 or Crimestoppers on 0800 555 111.