Mr Stevens said Naera did not know he was involved in a theft and thought he was just giving Rongonui a ride.
Naera told Judge Behrens that when he drove off, he had no understanding that a theft had occurred.
"When I found out, I pulled over straight away," he said.
"I'm not guilty of theft but I am guilty of driving him away."
Judge Behrens declined to give a sentencing indication and stood Naera down to consult with Mr Stevens about his plea.
When he was recalled, Naera confirmed his guilty plea and was remanded until September 24 for sentence.
Judge Behrens called for a pre-sentence report, which would consider the possibility of a sentence of home or community detention.