The front seat passenger needed to be freed from the vehicle by the Fire Service. She was flown to hospital for treatment but had no serious injuries.
The three children in the back were properly restrained. They suffered some bumps and bruises but no serious injuries.
Dawson said the driver of the vehicle was facing charges in relation to the incident.
The vehicle was undergoing examination and the passengers will be spoken to in due course.
Police had already spoken to witnesses at the scene, and they are now calling for more witnesses to come forward.
"Police are seeking further witnesses to the crash, particularly anyone who witnessed the vehicle in the time leading up to the crash driving around Kerikeri," Dawson said.
Steve Meredith, who drove past the crash, said it looked like the car had hit a power pole before flipping.
"There were ambulances and fire trucks and a stretcher beside the car."
Meredith said traffic was down to a crawl in the area.
