STEVE Sibraa said he was disappointed his son's killer only received a head sentence of six years, but was even more concerned he could be walking free on parole after serving only two.

Mr Sibraa's son Bailey was killed in a car crash at Buddina in January 2017, when the driver of the car, Jett Malcolm Morris, slammed the Ford ute into a tree.

Morris was under the influence of alcohol and cannabis at the time. He and Bailey were best friends.

A third friend in the car, Josh Harrison, suffered severe brain injuries.

Mr Sibraa said the "light" sentence handed to Morris would not be enough to send a message to young people getting behind the wheel drunk or on drugs.

"The past 14 months has been horrific for us," he said.

"But unfortunately, there were no winners here. The judge said there were laws he had to follow, and the maximum penalty for what Morris did was 14 years...But he only got six with parole eligibility after two.

"That was a bit light for us we would have liked to see more."

Mr Sibraa said if the courts wanted to prevent these accidents from occurring, penalties had to be harsher.

"It's not enough," he said. "Now we have to find ways to move on."