Around 1.30pm on June 3 a man reported a group of men punched him multiple times on Locarno Ave, Sandringham before fleeing in a silver vehicle.
On June 10, around 6.30pm a man was approached on Keystone Ave, Mt Roskill and was assaulted - the offender came from a Subaru station wagon.
The victim was punched and kicked multiple times before two other men, who were also in the Subaru, also punched and kicked him.
"Police are following strong leads on other offenders involved in the matter," said acting Detective Senior Sergeant Mark Franich.
The charged teenager will appear in the Auckland Youth Court later this week.