Rear cargo space is now 24 cubic feet with rear seats upright as the formerly trunk - mounted on - board charger was relocated under the hood. (hybridcars.com)
Just in case you care, there's 35 cubic feet of trunk space with the second row seats upright. (autoweek.com)
Wider than in previous 5 Series Sports Wagon; cargo volume ranges from 17.6 to 58.3 cu ft. with seats upright or folded, height of loaded cargo (topspeed.com)