>>>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 ;-)

The odd time I've bought premium fuel here, I've noticed better mileage - but not quite enough to offset the extra cost. Sounds like it is cost-effective for you.