The car only paused to dislodge the rider after the teen's passengers begged him to stop - before he drove off again, according to the Australian Associated Press.
Stevens suffered severe burns to his body during that time, when the petrol and oil from his bike caught fire, and his life support was turned off the next day.
County Court Judge Irene Lawson cried and took a moment to compose herself when describing the void left by Stevens' death at the hands of the now 18-year-old.
"You have senselessly and cruelly deprived a community of a loving father, son, partner, brother, uncle and friend,'' the AAP reported.
She called the teen's behaviour "inhumane'' and that that should be condemned.
After the hit-and-run, the teen and the rest of the group continued on a crime spree - dumping the stolen BMW and trying to break into two nearby properties.
At a third house, they broke in and stole several items including the home owner's car, which was later dumped and set on fire.
The judge said the teen's guilty pleas to culpable driving causing death, robbery and other charges showed some remorse and that she found he had good rehabilitation prospects, AAP said.
His offending justified time in adult prison, she said, but that a recommendation would be made that his time be served either partly or solely in youth detention.
The teen will eventually face deportation back to New Zealand on his release.