A man who raped a 13-year-old girl in the back of his car after offering her a lift home was on bail for previous sexual offending at the time.

Satyam Chetty was sentenced at Auckland's High Court this morning to a total of 10 years in prison for the two offences.

He had previously plead guilty to one charge of male rapes female.

In April 2016, Chetty, who was 41 at the time, offered a 13-year-old a lift home after seeing her on the side of the road near a mall in Manukau, the court heard.

He then drove her to a nearby park, climbed into the back seat with her and raped her.

Justice Vinning told the court, while reciting the facts of the case, the girl tried to make him stop but she could not get out of the car or fend him off.

Chetty then drove the girl back to the mall, where she called police.

At the time Chetty had been on bail for similar offending.

In 2014 he had offered a lift home to two women he met while out drinking in town, before leaving one at a petrol station and sexually violating the other in his car at a nearby supermarket car park while she was unconscious.

Justice Venning sentenced Chetty to 10 years in prison total for the two crimes, deeming it appropriate to add a further three years and two months on the sentence Chetty was already serving for the 2014 assault.

He will be in prison until July 2026.

The 43-year-old father of two's "predatory conduct" was serious but uncharacteristic, opportunistic and could likely be improved with rehabilitation in prison, Justice Vinning told the court.

Chetty had shown willingness to engage with rehabilitation treatment.