Newshub reports the 28-year-old smashed into a tree on the Hibiscus Coast Highway in Orewa at around 9:30am, and was left unconscious and trapped.
Shortland Street actor Pua Magasiva was among those who stopped to help, along with Michael Williams, Steve Strongman, Joe Parsons, Craig Watson and an off-duty police officer.
After Mr Williams managed to revive the driver, the car's engine burst into flames, police say.
"The actions of this brave group of people has no doubt saved this man's life," Acting Inspector Jason Homan says.
