BMW 5 Series Touring (2020) is 106 mm (4.17 inch) longer, 33 mm (1.30 inch) wider and has 100 liters (3.53 ft3) bigger cargo space than Buick Regal Sportback (2020).
Buick Regal Sportback (2020) is 63 mm (2.48 inch) higher and 159 kg (351 lbs) lighter than BMW 5 Series Touring (2020).