Monitoring and focus reports
The Commission produces quarterly monitoring reports, which monitor the performance of engine fuel markets in New Zealand under the Fuel Industry Act 2020.
Fuel price monitoring – Middle East conflict
The Commission is publishing regular fuel price monitoring reports in response to the conflict in the Middle East and the impact on global fuel prices.
23 April 2026: Our latest analysis to 22 April shows that prices for all fuel types have reduced over the last week. Daily refined product costs remain volatile, but the rolling 14-day average is trending down. Refined costs for diesel show the sharpest decline, with retail prices declining at a slower rate. It's important to note that diesel prices also did not rise as quickly as offshore costs earlier in the conflict. After narrowing in March, the gap between daily retail prices and the 14-day rolling average refined product cost for Regular 91 and Premium 95 has returned to closer to pre-conflict levels.
To provide a clearer comparison between movements in retail fuel prices and the underlying costs of fuel, from 16 April we have included a table showing refined product costs as a 14-day rolling average. We consider that it is more meaningful to look at the relationship between costs and retail prices on a slightly longer timescale because while we observe volatility in the day-to-day product costs we have observed fuel companies smoothing these changes when setting local prices.
Quarterly monitoring reports
These reports are based on the Commission’s analysis of the information disclosures (ID) provided by fuel companies each quarter, and provide snapshots of the competitive performance of engine fuel markets in New Zealand.
The Fuel Quarterly Monitoring Reports have been available since November 2022. In that time, the Commission has built the foundation of a solid data base that continues to grow.
Older reports
Reports older than the previous calendar year.
Focus reports
In addition to the quarterly reporting, the Commission occasionally publishes focus reports that supplement the analysis of quarterly information disclosure data.