BMW 5 Series Gran Turismo (2018) is 809 mm (31.85 inch) longer, 50 mm (1.97 inch) wider, 165 mm (6.50 inch) higher and has 195 liters (6.89 ft3) bigger cargo space than Mercedes SLK-Class (2017).
Mercedes SLK-Class (2017) is 244 kg (538 lbs) lighter than BMW 5 Series Gran Turismo (2018).