Several petrol stations in Auckland have been hit by fuel shortages as problems caused by damage to a pipeline in Auckland spread.
Z Energy confirmed that 13 service stations had run out of 95 octane petrol.
The firm said fuel was being trucked into the city and it did not expect the problem to worsen.
Fuel supplies to cars and planes in Auckland have been disrupted after the pipeline burst last week.
It was damaged by a digger on a rural property and its operator, Refinery NZ, said on Monday repairs could take at least a week.
Thousands of air passengers have also been stranded as the damaged pipeline is the only source of fuel to Auckland airport.
Supplies have been rationed and airlines forced to make stops at airports in Australia and the Pacific to refuel. Air New Zealand said on Monday fuel supplies at the airport were down to 30% of normal capacity.
The military has been trucking fuel supplies around New Zealand in an attempt to ease the shortage, as repairs to the burst pipe continue.
Refining NZ said in a statement late Monday that it was on track to repair the pipe and resume supply services between 24 September and 26 September.
Ruakaka, where the pipeline was damaged, is about 130km north of Auckland