Police were on hand at the funeral service for Pacer Willacy-Scott, which drew around 200 people to Anzac Hall in Featherston and concluded with a haka sendoff.
Pacer, 15, was a passenger in a stolen car that crashed into a power pole on Sunday, which also killed Featherston teenager and fellow passenger Hoani Korewha, 15.
The driver, aged 14 or 15, has appeared in court on a raft of driving charges, while a fourth teenager has been referred to Youth Aid.
Cars filled much of Birdwood St, leading to the hall.
Meanwhile, Pacer's casket, plain and adorned with flowers and messages of farewell inked on the side, was carried into the hall by bearers young and old.
The overflow from the hall meant around 20 people had to remain outside, although the heat caused a number to retreat outside, fanning themselves.
Two police officers waited on the street, talking to mourners, while a patrol car circled the block.
The service lasted 50 minutes, with members of St John forming an honour guard for Pacer, who had been a St John cadet.
His casket emerged to the tune of Don't worry 'bout a thing by Madcon.
Opposite the St John members, several teens formed up for a spirited haka, as the casket was eased into the hearse.