Australia's new-car market is a focus for the major parties in the election campaign.
The Coalition plans to abolish penalties for carmakers under the New Vehicle Efficiency Standard if elected.
Opposition members have criticized the government's claim that prices won't rise due to emissions regulations.
The NVES, effective from January 1, 2025, imposes penalties on carmakers for exceeding CO2 targets.
The legislation aims to reduce carbon emissions by setting yearly targets for different vehicle types.
Carmakers can earn emissions credits by meeting and exceeding fleet-wide targets.
The Coalition opposes the NVES, accusing it of being a tax on cars and utes.
The Electric Vehicle Council criticizes plans to remove fines from the efficiency standard, claiming it would limit fuel-efficient vehicle options for Australians.
There is debate regarding whether NVES penalties will lead to increased car prices, with conflicting opinions from industry figures and politicians.
The NVES penalties are set to take effect on July 1.