There is the same amount of space for all models (excluding the EV and plug in). The difference is in the trays provided to organize what you put there. You can even put a spare tire, and in some markets, a spare tire is available. You can retrofit a spare tire though or take out all organizers if you need more space. It is possible that the organizers help you carry more weight in the standard storage area by bracing the load floor. As I understand it, the U.S. FE model has a weaker load floor than other models, and the highest trims may be stronger than the mid trims.