BMW 6 Series Gran Turismo (2018) is 73 mm (2.87 inch) longer, 35 mm (1.38 inch) wider, 78 mm (3.07 inch) higher and has 184 liters (6.50 ft3) bigger cargo space than Buick LaCrosse (2017).
Buick LaCrosse (2017) is 49 kg (108 lbs) lighter than BMW 6 Series Gran Turismo (2018).