A teenager suffered multiple injuries after the utility he was sitting in the rear tray of rolled over in the Shoalhaven Sunday night.
Emergency services were called to Yawal, west of Nowra after reports the Toyota Hilux carrying two occupants in the cab and two unrestrained teenagers on the rear tray lost control and rolled on Yawal Road about 10.40pm.
The two teens were thrown from the rear tray, with a 16-year-old boy suffering multiple fractures and internal injuries, police said.
The boy was treated at the scene by paramedics before being airlifted to Liverpool Hospital where he is in a serious condition. Two other passengers, both aged 17, suffered minor injuries.
The 17-year-old P1 driver was breath-tested at the scene, allegedly returning a positive result. He was taken to Shoalhaven Hospital for mandatory blood and urine testing before being released pending the results and further investigations.
Police have seized the utility for examination.
Shoalhaven police are appealing for any person who witnessed or has information about the incident to come forward.
Crime Stoppers: 1800 333 000