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.

Over time, the Commission expects to build a more robust picture of their performance as more data becomes available under ID.

Quarterly monitoring reports

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. From mid-2024 the Fuel Quarterly Monitoring Reports will look different to what has been produced to date. Specifically, these reports will no longer include high level commentary, and will not focus on specific issues. This will enable the Commission to deliver more timely monitoring reports. This will also allow the Commission to work on other analysis and produce more Focus Reports. We will continue to monitor trends in the ID data, and will use this to inform and prioritise further analysis as it comes to hand.

Current report

Quarterly fuel monitoring report (Quarter ending September 2024)

Previous reports

Quarterly fuel monitoring report (Quarter ending  June 2024)

Quarterly fuel monitoring report (Quarter ending March 2024)

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Quarterly fuel monitoring report – October 2023–December 2023 PDF (3 MB)

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Quarterly fuel monitoring report – July 2023–September 2023 PDF (1 MB)

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Quarterly fuel monitoring report – April 2023–June 2023 PDF (5 MB)


Older reports pre-dating the last calendar/financial year can be found in the documents section of our website.

Focus reports

In addition to the quarterly reporting, the Commission occasionally publishes focus reports that supplement the analysis of quarterly information disclosure data.

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Removal of Auckland Regional Fuel Tax (August 2024) PDF (1 MB)

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Impact of changing costs on retail fuel prices (June 2024) PDF (286 KB)

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- Technical attachment – Analysis of impact of changing costs on retail fuel prices (June 2024) PDF (513 KB)

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Impact of new unstaffed retail petrol stations on fuel prices (April 2024) PDF (319 KB)

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Technical attachment – Analysis of impact of new unstaffed retail petrol stations on fuel prices (April 2024) PDF (747 KB)

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Weaker competition in some local markets appears to be contributing to variation in retail petrol prices (April 2024) PDF (506 KB)