The Australian Competition and Consumer Commission has named Coles Express as the nation’s highest-priced petrol retailer in a new industry report.

The ACCC took the unusual step of naming and shaming Australia’s largest fuel retailers, who often use loyalty discounts to lure customers to their petrol offerings.

Major retailers such as BP, Coles Express and Caltex had the highest prices on average, while independent chains such as 7-Eleven and United had prices lower than the market average.