BMW 7 Series (2018) is 964 mm (37.95 inch) longer, 85 mm (3.35 inch) wider, 175 mm (6.89 inch) higher and has 179 liters (6.32 ft3) bigger cargo space than Mercedes SLK-Class (2017).
Mercedes SLK-Class (2017) is 405 kg (893 lbs) lighter than BMW 7 Series (2018).