BMW 5 Series Touring (2019) is 20 mm (0.79 inch) longer and 33 mm (1.30 inch) wider than Buick Regal TourX (2020).
Buick Regal TourX (2020) is 91 mm (3.58 inch) higher, 219 kg (483 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than BMW 5 Series Touring (2019).
