The RACQ will urge Australia’s competition watchdog to investigate why Brisbane motorists pay so much more at the bowser than others.

A motoring group will ask the competition watchdog to investigate Brisbane’s petrol market after record high petrol prices last year.

A report released by the RACQ on Wednesday found Brisbane motorists paid more at the bowser last year than drivers in other parts of the country.

Brisbane drivers paid an annual average price of 147.9 cents per litre – the highest on record.

The RACQ says the Australian Competition and Consumer Commission (ACCC) must investigate.

It says last year’s oil price fluctuations and a weakening Australian dollar don’t justify the prices charged in Brisbane, and blames a lack of competition in the market.

RACQ spokeswoman Renee Smith says retail margins are far higher than what’s fair.

“We will forward this report to the ACCC as part of its ongoing investigations into the fuel market, asking it to look into why Brisbane motorists paid more for unleaded petrol than ever before,” Ms Smith said.

The average cost of unleaded in Brisbane in 2013 was 3.8 cents a litre higher than in Adelaide, 3.6 cents higher than Melbourne, 2.9 cents higher than Sydney, and 1.7 cents above Perth.

A new daily average high of 165.4 cents a litre for unleaded was recorded in Brisbane on July 24.

Ms Smith said the best priced fuel was found north of Brisbane, and that was because competition there was strong.

The Sunshine Coast recorded the cheapest prices in Queensland with an annual average of 145.7 cents a litre for unleaded.