Petrol and diesel are the main fuel types used for road transport in New Zealand. Combustion of each fuel type produces different air pollutants for each kilometre travelled, although other factors affecting emissions include:
The proportion of heavy diesel vehicles in the fleet is particularly important because they emit disproportionately more PM10 and NOX than light vehicles.
Good quality vehicle fuel is critical because it:
Key milestones in New Zealand vehicle fuel improvements include:
The Ministry of Business, Innovation and Employment (MBIE) is responsible for administering the Engine Fuel Specifications Regulations 2011 (external link) (the Regulations). The Regulations provide comprehensive fuel specifications for petrol, petrol/ethanol blends, diesel, biodiesel, and diesel/biodiesel blends.
MBIE is currently reviewing aspects of the current regulations (external link) to ensure New Zealand continues to be aligned with overseas specifications and technological advances. Submissions closed at the end of 2015 and a decision is due in 2016.
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