New Zealand extend to 15 Tests their winning run since they lost to Australia in August 2015, posting six tries in coasting to a routine victory against South Africa at AMI Stadium.

The rampant world champions notched a fourth-successive bonus-point win and consigned the Springboks to a third-straight loss to maintain the respective fortunes of the two historic great rivals.

The All Blacks led 15-10 at half-time following some robust early work from the visitors, and they steamed clear against a fraying defence after the break to post the most points they have scored in 10 years against the Springboks..

As they did last week against Argentina, the All Blacks' pressure broke the Springboks, who had attacked the rucks to disruptive effect throughout the first 40 minutes.

The result effectively hands New Zealand the Rugby Championship title with two rounds to spare, while heaping more pressure on Springboks coach Allister Coetzee ahead of home Tests against Australia and New Zealand.

The Boks failed to curtail All Blacks half-back Aaron Smith, who unfurled an influential display a week after being subbed off early against Argentina when his form dipped.

His passes set up the first four All Blacks tries, to the back three of Israel Dagg, Julian Savea and Ben Smith, and flanker Ardie Savea.

The No.9's kicking game was also a class above that of the Springboks, with five-eighth Elton Jantjes enduring another troubled night.

An early penalty to New Zealand five-eighth Beauden Barrett was followed by South Africa's only try, when 120-Test winger Bryan Habana ran a beguiling angle.

Jantjes then opened the door for the hosts when he dropped the subsequent kickoff cold.

It sparked two near-identical tries to wingers Dagg and Savea, the latter notching his first points in seven Tests against the Springboks.

Owen Franks finished the Test with an unwanted world record. By failling to score a try in his 84th Test, the All Blacks' tighthead prop set a new mark for the longest tryless start to a career.