Weekly fuel price monitoring
We carry out weekly monitoring of national average prices and retail importer margins for regular petrol, premium petrol, and diesel. This data is updated weekly, using the previous week's data.
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Fuel response support
Information about the price the government uses to inform temporary fuel response support can be found on our Price for fuel response support page.
Price for fuel response support
Update on Wednesday 23 September 2026
MBIE has updated its weekly fuel price monitoring methodology to reflect additional costs that fuel importers have faced due to the 2026 Middle East conflict.
The Commerce Commission, in consultation with fuel importers, has identified additional costs associated with importing and supplying fuel. MBIE has worked with the Commerce Commission to incorporate these costs in our weekly fuel price data.
To better reflect current market conditions and account for these additional costs, we have applied a fuel market adjustment to all fuel types from 27 February 2026. This has resulted in revisions to the importer cost, importer margin, and importer margin trend series.
More information on these changes can be found on our weekly fuel price monitoring methodology document.
Purpose
Our monitoring shows how recent movements in key factors, such as international oil prices, are affecting retail pump prices that consumers are facing in New Zealand.
This monitoring was a recommendation of the 2008 New Zealand Petrol Review to promote transparency in retail petrol and diesel pricing.
Use of this data
This work is licensed under a Creative Commons Attribution 4.0 New Zealand Licence(external link) — creativecommons.org
This data is intended to provide an indication to the public of how retail fuel prices and their components are tracking over time. MBIE endeavours to the best of its ability and knowledge to ensure that the data is accurate. However, we do not warrant or represent that the data is current, accurate or complete. MBIE excludes all liability and/or responsibility for any loss or damage directly or indirectly resulting from the use of, or reliance on, the data including (without limit) resulting from any error, inadequacy, deficiency, flaw in or omission from the information. MBIE may change, delete, add to or otherwise amend the data at any time.
The following graphs show the latest fuel statistics up to the week ending 25 September 2026 (updated weekly).
Weekly fuel series
This CSV data contains the weekly fuel price data.
The following document gives a description of the variables in this CSV.
Weekly fuel price monitoring data dictionary [PDF 76KB]
On Wednesday 7 May 2025, we introduced a new methodology and format for our weekly fuel monitoring data. We ceased publishing the old series on Wednesday 6 August 2025.
More information on these changes:
Weekly average price components
Dotted line shows boundary between final and provisional data.
Descriptive text for the Weekly Average Regular Petrol Price Components graph
Descriptive text for the Weekly Average Diesel Price Components graph
Descriptive text for the Weekly Average Premium Petrol 95R Price Components graph
Methodology and reference documents
Methodology
This document outlines the methodology we use to calculate our fuel price and importer margin data.
Analysis of Middle East conflict on fuel monitoring
MBIE is actively monitoring market conditions and impacts resulting from the 2026 Middle East conflict. Our findings from our analysis can be found on our Weekly fuels importer cost and margin restart analysis page.
Review of the New Zealand Petrol Market
In 2008, Envisory (then Hale & Twomey) conducted a review of New Zealand’s petrol market, in response to a review performed by the Australian Competition & Consumer Commission (ACCC) review into the Australian petrol market. This review identified monitoring of fuel prices key to promoting transparency in retail fuel pricing in New Zealand.
Related content
New methodology
Updates we made to our methodology in May 2025 and what the changes mean.
Energy in New Zealand
This annual publication provides information on and analysis of New Zealand’s energy sector including statistics on supply, transformation, and demand.
Energy prices
Real and nominal price data relating to New Zealand’s energy prices — petrol, diesel, fuel oil, natural gas and electricity.