The Queensland government has announced new laws to stop petrol stations from displaying discounted fuel prices on their boards.

However, the Opposition has been left fuming, after they announced the same policy 18 months ago, which was rubbished by Labor at the time.

From February 2018, Queensland petrol stations must display the undiscounted fuel price on both the pricing board and pump itself. Credit:Thinkstock

The new laws will come into effect on January 31, 2018, with the RACQ having called for them for the past five years.

Treasurer and Acting Energy and Biofuels Minister Curtis Pitt said the new "what you see is what you pay" regulations were about improving transparency in the industry.