Hyundai i40 (2015) is 239 mm (9.41 inch) longer, 188 kg (414 lbs) lighter and has 55 liters (1.94 ft3) bigger cargo space than Mercedes GLK-Class (2018).
Mercedes GLK-Class (2018) is 25 mm (0.98 inch) wider and 229 mm (9.02 inch) higher than Hyundai i40 (2015).