Updated 11.16am: The eight hectare scrub fire raging in Wainuiomata overnight looks to be under control.

The Fire Service was first alerted to the flare-up on Coast Road at around 2 this morning.

Central Fire Communications shift manager Jan Wills says they were able to keep the blaze controlled and stop it from nearing the town.

She says there are no reports of any property damage or injuries from the fire.

Upwards of 30 rural firefighters are working on the blaze.

The Fire Service was first alerted to the flare-up on Wainuiomata Coast Road at around 2 this morning.

A helicopter has flown over to dump water on the flames.

A burning car is being blamed for causing a scrub fire which has had rural crews out since the early hours of this morning.