Audi R8 (2016) is 104 mm (4.09 inch) wider and 245 kg (540 lbs) lighter than Mercedes GLK-Class (2018).
Mercedes GLK-Class (2018) is 91 mm (3.58 inch) longer, 454 mm (17.87 inch) higher and has 224 liters (7.91 ft3) bigger cargo space than Audi R8 (2016).