Tesla has severed ties with Australia's major auto lobby, the Federal Chamber of Automotive Industries (FCAI), over misleading claims about new fuel efficiency standards.

The company has accused the FCAI of spreading false information about the impact of the government's proposed standards on car prices and has called for a competition regulator investigation.

The proposed fuel efficiency standards aim to reduce carbon emissions from new vehicles starting next year, potentially increasing electric vehicle imports to Australia.

The FCAI has criticized the government's fuel efficiency standards as 'extremely aggressive', suggesting they could disrupt the industry and lead to higher consumer prices.

Despite Tesla's resignation, it is unclear whether the company will continue to share sales data for inclusion in the FCAI's monthly VFACTS reports.