BMW 5 Series Gran Turismo (2016) is 338 mm (13.31 inch) longer and 62 mm (2.44 inch) wider than Buick Envision (2017).
Buick Envision (2017) is 138 mm (5.43 inch) higher, 63 kg (139 lbs) lighter and has 262 liters (9.25 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2016).