BMW 8 Series (G16) (2020) is 65 mm (2.56 inch) longer, 65 mm (2.56 inch) wider and has 15 liters (0.53 ft3) bigger cargo space than Buick LaCrosse (2017).
Buick LaCrosse (2017) is 54 mm (2.13 inch) higher and 163 kg (359 lbs) lighter than BMW 8 Series (G16) (2020).