BMW 6 Series Gran Turismo (2018) is 89 mm (3.50 inch) longer, 45 mm (1.77 inch) wider, 35 mm (1.38 inch) higher and has 303 liters (10.70 ft3) bigger cargo space than Buick LaCrosse (2014).
Buick LaCrosse (2014) is 87 kg (192 lbs) lighter than BMW 6 Series Gran Turismo (2018).