Police are appealing for witnesses as they continue to investigate a serious crash in Elanora overnight.
The accident happened around 9.45pm on Saturday, when a 17-year-old boy lost control of the Subaru Outback he was driving.
Police say the vehicle then left the road before colliding with a power pole.
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Four teenagers were treated at the scene, including a 16-year-old male passenger who suffered a serious head injury.
He was rushed to the Gold Coast University Hospital in a critical condition, while a fellow passenger, also aged 16, sustained minor injuries and was taken stable.
The 17-year-old male driver and a 16-year-old male passenger managed to escape unharmed, but were also taken to hospital for precautionary measures
Detectives are now asking anyone who witnessed the crash or who may have dashcam footage to come forward.
The Forensic Crash Unit is investigating.
You can also report information about crime anonymously to Crime Stoppers by calling 1800 333 000 or via crimestoppersqld.com.au 24 hours per day. Crime Stoppers is a registered charity and community volunteer organisation.