The Minister for Transport says scrapping the Clean Car Standard's being considered.
The standard imposes fees on importers bringing high emitting vehicles into the country.
A Transport Ministry-led review recently involved consultations with the vehicle industry, where they were asked for their thoughts on possible abolishment.
Chris Bishop says this type of review, by definition, must look at the need for something overall.
"It would be fair to say not that many people are keen on scrapping it altogether, we're going through a process with industry right now and we do want to see cleaner cars in New Zealand over time."
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