Wellington, March 12, 2026 — New Zealand’s competition regulator has intensified its monitoring of petrol prices as global fuel markets become more volatile, warning it will publicly call out companies if retail price increases appear unjustified.
The Commerce Commission said it will increase scrutiny of petrol pump prices and publish more frequent reports comparing retail prices with international fuel costs.
Commissioner Bryan Chapple said the regulator would use transparency and public scrutiny to hold fuel companies accountable during a period of rising wholesale prices linked to global market pressures.
“Public scrutiny is a powerful tool and we will use it,” Chapple said. “Nobody wants to see fuel companies using the situation in the Middle East as an excuse to unjustifiably increase prices at the pump. Any retail price increases should be aligned with actual increases in the cost of sourcing fuel.”
The commission has communicated its expectations directly to fuel companies, stressing that pricing changes should reflect genuine cost movements.
Under New Zealand’s regulatory framework, the commission does not set or control fuel prices. Instead, its role is to monitor the market, publish analysis and ensure companies make fair and accurate representations about pricing.
The regulator’s reports, published on its website, will track movements in retail petrol prices and compare them with changes in the cost of importing fuel.
“We want consumers to feel confident that petrol price increases are justified and that decreases in global costs are passed through to retail prices as quickly as increases,” Chapple said.
The commission also plans to examine differences in pricing across regions to identify any unusual patterns.
The first snapshot analysis released by the regulator did not raise immediate concerns, according to Chapple. While international fuel costs have risen faster than retail prices, he said this pattern is consistent with previous global market shocks.
However, the regulator emphasized that such conditions should not be used as justification for excessive price increases.
Alongside its monitoring work, the commission reminded businesses that any fuel surcharges added to products or services must be clearly disclosed and explained to customers. While surcharges are legal, companies must be transparent about why they are applied.
Consumers who believe a business has misled them about price increases are encouraged to report concerns through the commission’s website.
The monitoring effort forms part of the regulatory framework established under the Fuel Industry Act 2020, which aims to promote competition in fuel markets for the long-term benefit of consumers.
While high prices alone do not breach the law under the Fair Trading Act 1986, misleading or deceptive conduct and false representations about pricing can trigger enforcement action, including court proceedings and potential fines.
