Car owners in Japan have been shouldering unfair levies and a new tax to replace the current car acquisition tax next year will not ease the burden, said Fumihiko Ike, chairman of the nation's biggest automakers' lobby group.

Under the government's plan, the acquisition tax currently paid on all new vehicle purchases will be phased out when the consumption tax is raised from the current 8 percent to 10 percent in April 2017.

Instead, the government will introduce a new variable tax of up to 3 percent on new cars depending on the car's fuel efficiency.