BMW 7 Series (2018) is 81 mm (3.19 inch) longer, 35 mm (1.38 inch) wider, 17 mm (0.67 inch) higher and has 109 liters (3.85 ft3) bigger cargo space than Buick LaCrosse (2019).
Buick LaCrosse (2019) is 277 kg (611 lbs) lighter than BMW 7 Series (2018).