It was after he confronted 4 thieves wearing balaclavas trying to steal a catalytic converter just after 8pm on Victoria Road.
The men attacked him, causing serious facial injuries, including a suspected fractured eye socket, and injuries to his hand and fingers.
He is currently receiving treatment in hospital, but his injuries are not thought to be life-threatening.
Any witnesses or anyone with CCTV or dashcam footage in the area around the time of the incident is urged to contact police on 101.