A 17-year-old woman seriously injured in a three car collision in Waikato last week has died overnight.
The woman was a passenger in a Suzuki Swift heading west along State Highway 23 near Whatawhata which collided with an oncoming Nissan Bluebird shortly before 10pm on Thursday.
The driver of a Hyundai Sonata following the Suzuki managed to break and avert all but a minor collision with the rear of the Swift.
Police believe the Nissan Bluebird crossed the centre line, smashing head-on with the Suzuki.
The female driver of the Suzuki and a passenger in her car were both taken to Waikato Hospital by ambulance with serious injuries.