BMW 8 Series (G14) (2018) is 35 mm (1.38 inch) wider than Buick LaCrosse (2017).
Buick LaCrosse (2017) is 174 mm (6.85 inch) longer, 122 mm (4.80 inch) higher, 177 kg (390 lbs) lighter and has 75 liters (2.65 ft3) bigger cargo space than BMW 8 Series (G14) (2018).