Sio had several earlier drink-driving convictions, with the most recent in 2012.
Judge Tuohy warned Sio against winding up with a fifth conviction for drink-driving.
"If you appear again, you are likely to go to prison on a charge of this nature."
Sio needed to undertake a programme to stop him from drink-driving, Judge Tuohy said.
He sentenced Sio to three months' community detention, nine months' supervision to undertake alcohol assessment and treatment as directed, and disqualified him from driving indefinitely.
People indefinitely disqualified from driving must apply to the director of Land Transport New Zealand to get their licence back.