The 15 year-old driver from Mt Roskill is in Auckland Hospital with minor injuries, while a 15-year-old front seat passenger- also from Mt Roskill - is in a critical condition.
A 13-year-old back seat passenger from Westmere is in Starship Hospital with moderate injuries.
Their families are with them at hospital.
North Shore Area Commander, Inspector Shanan Gray, says a number of investigations are underway; "The scene has been examined by the Waitemata Serious Crash Unit, the CIB are also investigating and as is standard procedure, we've notified the IPCA."
"No Police officer wants a fleeing driver incident to end this way.
"These types of incidents are fast-moving and unpredictable and Police always face a difficult balance between our duty to enforce the law and protect life, and to consider why the driver feels the need to avoid speaking to Police."
- nzherald.co.nz