BMW 8 Series (G16) (2020) is 426 mm (16.77 inch) longer, 42 mm (1.65 inch) wider, 191 kg (421 lbs) lighter and has 90 liters (3.18 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 252 mm (9.92 inch) higher than BMW 8 Series (G16) (2020).