Brisbane motorists have been urged to take the power back from overcharging service stations after paying almost 14¢ a litre more for unleaded petrol in 2018 than the previous year.

They also paid 3¢ a litre more than motorists in any other capital city, according to a 12-month summary of fuel prices by the RACQ.

Brisbane still paying more for petrol than any other capital city. Credit:Fairfax

Brisbane drivers copped their highest-ever bowser price in October, when unleaded petrol cost $1.69 a litre.

Diesel fuel prices also jumped to an average $1.50 a litre, more than 20¢ higher than 2017.