BMW 3 Series Gran Turismo (2014) is 25 mm (0.98 inch) higher than Buick Regal TourX (2018).
Buick Regal TourX (2018) is 162 mm (6.38 inch) longer, 34 mm (1.34 inch) wider, 53 kg (117 lbs) lighter and has 80 liters (2.83 ft3) bigger cargo space than BMW 3 Series Gran Turismo (2014).