Engine fuel quality
The quality of engine fuels in New Zealand is governed by a set of regulations designed to protect consumers and the environment.
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The Engine Fuel Specifications Regulations
We are responsible for administering the Engine Fuel Specifications Regulations 2011. The regulations set out fuel specifications for petrol, diesel, biofuels, and biofuel blends. Aviation fuels are not covered by these regulations.
The regulations set out the minimum standards for fuel performance, enabling consumers to purchase fuel to a quality standard appropriate for New Zealand's vehicle fleet and climatic conditions. They also include provisions limiting fuel components that could be harmful to the environment or public health.
The regulations are reviewed periodically to keep pace with technological advances and international standards for fuel quality and vehicles.
Engine Fuel Specifications Regulations 2011(external link) — New Zealand Legislation
2025 review of fuel specifications
Between February and April 2025 we sought feedback on proposed changes to the engine fuel specifications.
Have your say: Updating New Zealand’s engine fuel specifications to ensure they are fit-for-purpose
2016/17 updates to fuel specifications
Documents relating to the previous amendments to the regulations in 2016/17.
Cabinet paper: Updating New Zealand’s engine fuel specifications [PDF, 225 KB]
Review of the Engine Fuel Specifications Regulations 2011 [PDF 318KB]