A man is in a critical condition after a serious crash at Milang early this morning.

About 12.20am Sunday 14 June police and emergency services were called to Nine Mile Road after a car travelling south lost control and left the road crashing into a tree.

The driver and sole occupant, a 34-year-old Strathalbyn man, was airlifted to the Flinders Medical Centre with life threatening injuries.

Police are investigating the circumstances surrounding the crash, anyone with information who has not yet spoken to police is asked to contact Crime Stoppers on 1800 333 000 or report on line at www.crimestopperssa.com.au