Anyone with any information about the car, particularly on the June 16, has been urged to contact police.
Police are also interested in hearing about sightings of Taupo Mongrel Mob members in Hamilton on the same day.
Detective Sergeant Andrew Saunders this morning said "we are treating this as an attempted murder and are pursuing lines of enquiry to identify those involved in this cowardly act."
"Gangs are often associated with the use of firearms but targeting a 14-year-old in this manner is a new low. The actions of the offenders can only be described as gutless and we encourage anyone with information to please come forward."
Anyone with information can contact Detective Sergeant Andrew Saunders on 07 858 6200 or anonymously via Crimestoppers on 0800 555 111.