Three drink-drivers were caught at one police checkpoint in Whangarei within about an hour.
Police say that despite repeated warnings and advice, drivers continued to take the risk after drinking this festive season.
Acting Sergeant Jim Adamson said a 15-year-old male was among those stopped by officers between Friday night and early Saturday.
The youth was on a 24-hour curfew when he allegedly stole his friend's father's car and was spotted driving with no headlights on Bank St about 3am on Saturday.
As police attempted to stop him, he allegedly veered along the kerb and on to grass, narrowly missed a power pole, then crossed the centre line before coming to a stop.