Police have confirmed that two people were killed in the crash at Culverden, North Canterbury earlier today.
They said State Highway 7 had now re-opened and a scene examination had been conducted.
Due to the severity of the crash, Senior Sergeant Paul Reeves said police had previously been unable to determine how many people were travelling in the car.
The truck driver was uninjured in the crash.
It was also also reported that power was out to the Culverden township following the incident.
Anyone who witnessed the crash is asked to contact their nearest Police station.