Toyota New Zealand is questioning the Government's timeline to reducing the country's carbon emissions.
The Government wants to introduce a Clean Car Standard to improve fuel efficiency - and a Clean Car Discount, funded by fees on high-emission vehicles.
It aims to reduce carbon emission standards to 105g of CO2 per kilometre by 2025.
Toyota chief executive Alistair Davis told Newstalk ZB it will happen but it's just a matter of when.
"People are increasingly recognising climate change and we need to do something about it," he said.