BMW i3 (2015) is 635 kg (1,400 lbs) lighter than Mercedes GLK-Class (2014).
Mercedes GLK-Class (2014) is 537 mm (21.14 inch) longer, 65 mm (2.56 inch) wider, 121 mm (4.76 inch) higher and has 190 liters (6.71 ft3) bigger cargo space than BMW i3 (2015).