Audi R8 (2015) is 104 mm (4.09 inch) wider and 245 kg (540 lbs) lighter than Mercedes GLK-Class (2017).
Mercedes GLK-Class (2017) is 91 mm (3.58 inch) longer, 454 mm (17.87 inch) higher and has 351 liters (12.40 ft3) bigger cargo space than Audi R8 (2015).