Only at Chevron AFAIK. Also, it may not be available across Canada, but it is available throughout BC. Another reason for you to go fully metric and move north.

In my area (Lower Mainland of BC) Chevron doesn't sell 91 for Supreme as they do in the rest of the province, they sell 92. Probably trying to use up all that 94 in the pump blend.

Chevron 94, or Supreme Plus, used to be quite a premium (pun intended) over Supreme, but lately it has been only $0.01 per litre. The frustration is we don't know if the 92 has ethanol or not. They have to have 5% across all their fuel sales, so it varies from time to time and from grade to grade. All pumps from 87 to 92 at Chevron are labelled "May contain up to 10% ethanol" but in reality they are likely half that.

None of this matters on the X3, which runs fine on 89, as did my X5, but the 535 notices the difference. And the X3 does run better with no ethanol, so that is enough reason to put 94 in it.

__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue