A TEENAGER was taken by air ambulance to Kings College Hospital, London, after the black Ford Focus he was a front seat passenger in, collided with a tree on Saturday, June 4.
Emergency services attended the incident in London Road, Henfield shortly before 8am.
The front seat passenger, a 19-year-old man, received life threatening injuries and remains in a serious condition.
Another 19-year-old man from Sayers Common, West Sussex who was travelling in the rear of the car received a broken arm and the other back seat passenger, a 22-year-old man from London Road, Henfield received facial injuries.
Both men were taken to the Royal Sussex County Hospital.
The 19-year-old driver of the Focus received bruises and cuts to his face and was taken to Worthing Hospital for treatment.
Anyone who witnessed the collision or saw the car shortly before it hit the tree are asked to contact Sussex Police on 0845 60 70 999 quoting Operation Heathbarn.