In a Facebook post, a person reporting to be a relative of the girl said she arrived home panting, with a torn T-shirt and scratch marks across her stomach and back.
The post said she was walking along Coxhead Rd past Dale Reserve when she passed a car with three males inside.
Two of the males then started chasing her, and one of them managed to grab her and drag her into the reserve.
The driver in the car, which was parked on the road, allegedly yelled, "Hurry up, just chuck her in the car."
She managed to struggle free and escape.
"Something like this has never happened before in our family," the post read.
Police have been canvassing the area for CCTV footage and speaking with neighbours.
Anyone with information regarding the incident or who may have seen anyone acting suspiciously, is encouraged to contact the Counties Manukau Crime Squad on 09 261 1321.