octane values for petrol start as low as 91 octane for standard, there is also a 95 and 98 octane.
the 98 is $1.50+.
on a better note the car tax is a flat rate no matter what size engine you have $300+ and this also give you insurance on your vehicle of third party

was looking at some lovely holden commodores over there, they look the bizz, but they are vauxhalls afterall, so im a bit torn on this one, lol
