ACCC media release
ACCC report
My own research in Melbourne from a few months ago:
Petrol price differentials - additional cost for Premium unleaded petrol on top of Regular ULP price)
—————————-RON 95—-RON 98
BP……………………..8…………..16
Metro…………………10…………..-
United Petroleum…..10…………..16.5
7-Eleven/Mobil……..11…………..16
Caltex………………..12…………..19
Woolworths/Caltex…12…………..18
Coles/Shell………….17…………..23
yeah, i gave up supermarket petrol discounts a while back.
I've also been logging different RON and consumption in my car. Calculating a price/performance ratio.