The federal government of Australia has proposed implementing carbon-emission rules which may increase the price of country’s most popular cars by an estimated approximate of $4,000.

The country’s federal government, which is led by Prime Minister Malcom Turnbull, has outlined emissions penalties that will be imposed on car distributors that do not meet the proposed efficiency targets, according to The Daily Telegraph.  The proposed fuel efficiency standard is based on achieving a new light-vehicle fleet average equivalent to 105g CO2/km (approximately 52 miles per gallon) by 2025. 

The Turnbull Government proposes to dramatically increase the cost of selling high-CO2 emitting petrol vehicles within eight years to help Australia meet its Paris climate change commitments, according to the Sydney Morning Herald.

Automakers that fail to meet this target over a three-year-period will have to pay $79 for every extra gram of carbon dioxide per kilometre generated.

Australia’s Department of Infrastructure and Regional Development said the government has yet to make a decision on the proposal, according to The Daily Telegraph.