Audi R8 (2016) is 62 mm (2.44 inch) wider and 140 kg (309 lbs) lighter than Mercedes CLS-Class (2015).
Mercedes CLS-Class (2015) is 495 mm (19.49 inch) longer, 172 mm (6.77 inch) higher and has 294 liters (10.38 ft3) bigger cargo space than Audi R8 (2016).