A teenager who fatally ran down a man in a Victorian car park because he feared for his life will spend four years in a youth jail for the crime.
Setefano Pahul Tupou deliberately hit Timothy Williams after the 41-year-old punched and kicked the teen's car at a Geelong beach car park in October 2019.
"The consequences were tragic," Supreme Court Justice Paul Coghlan said on Tuesday.
Mr Williams went missing from a psychiatric facility and was punching a sign at the car park when he heard then-18-year-old Tupou and his girlfriend laugh.
He walked up to their car and attacked it, hitting the window and driver's side door.
Tupou told the stranger to "f*** off" before he reversed into him.
Once Tupou, now 19, realised Mr Williams wasn't moving he jumped out of the car and tried to help the injured man.
The father-of-two died two days later in hospital. He was a voluntary patient in a psychiatric facility when he disappeared after he went for a smoke.
"I was expecting him to just get a nudge," Tupou told a police interview.
He admitted the hit was intentional but said he was scared for himself and his girlfriend.
Tupou's response was "instantaneous" but Justice Coghlan accepted there was no intent to seriously injure Mr Williams.
Tupou sat through most of the sentence with his head bowed.
The teen was originally charged with murder but pleaded guilty to manslaughter earlier this year.
Tupou had undiagnosed post-traumatic stress disorder at the time and overreacted to Mr Williams' actions out of fear for his own life, Justice Coghlan said.
Mr Williams' sister previously told the court her brother was a positive and compassionate man.
"As time goes on I hope the darkness and fog lifts a little more but I still feel the heaviness of it every day."
Tupou was born in New Zealand, came to Australia as a baby and faces deportation after his sentence.
The young man was of previous good character, had no prior criminal history and shown "clear remorse", Justice Coghlan said.
He ordered the teen to serve four years in a youth prison for the crime.
After he was sentenced the young man was allowed to hug his tearful family members.