>>our "super premium" is 102, 98 (high grade) also sometimes available,
>>95 (still called premium) is the most common gas sold today
>>and 92 has almost vanished (called normal, but today often sold at premium price, so less demand)
>>so RON seems to fit those steps best if considered to be ceiling(RON).
>
>Still sounds like your fuel octane is better than ours. I haven't seen anything over 91 octane at self-serve pumps for some time, although a few years back ISTR seeing 94 octane available at some stations.
>
>1€ is currently about C$1.30. If we compare cheapest widely available fuel, your cost premium is
>
>1.3 * ( 1.60 / 1.40 ), or about 49%.
>
>For Viv, 1£ is currently about C$1.59. His premium:
>
>1.59 * ( 1.40 / 1.40 ), or about 59%.
>
>So, you guys pay 50 - 60% more for fuel. And, I believe Vancouver has amongst the highest prices in North America, so your cost premium compared to average North American is even higher.

As our prices include more misguided tax attempts, the gain from higher octane reduces the nearly linear (exempt for VAT)
tax burden for us more than for you. No wonder we go for higher octane earlier,
as the added cost for higher octane dwindles when viewed s percentage of total cost ;-)