BMW 8 Series (G16) (2020) is 665 mm (26.18 inch) longer, 128 mm (5.04 inch) wider and has 19 liters (0.67 ft3) bigger cargo space than Mercedes GLA-Class (2014).
Mercedes GLA-Class (2014) is 87 mm (3.43 inch) higher and 514 kg (1,133 lbs) lighter than BMW 8 Series (G16) (2020).