A MAN has suffered “critical” head injuries after his car crashed about 30 metre down an embankment off the Centenary Highway, west of Brisbane.

Emergency crews were called to the crash at Augustine Heights about 10,30am.

Paramedics are currently assessing a man, the sole-occupant of the vehicle, for critical head injuries, a Queensland Ambulance Service spokesman said.

It is understood the car was travelling eastbound.