BMW 8 Series (G14) (2020) is 200 mm (7.87 inch) longer and 68 mm (2.68 inch) wider than Mercedes GLB-Class (2019).
Mercedes GLB-Class (2019) is 320 mm (12.60 inch) higher, 488 kg (1,076 lbs) lighter and has 220 liters (7.77 ft3) bigger cargo space than BMW 8 Series (G14) (2020).