[tranzformer]

^ I think that could very well be a typo based on it being Pre-production info. Much of US can only get 91. Makes no sense to require 93 if it isn't easily accessible.

Edit: Was looking at the WRX and STI requirement and it states 91 required and 93 recommended. I am wondering out loud if they meant something like that? I will wait until the owners manual is released for the final say. No matter what the marketing brochure says, it still does not make sense for 93 to be required.