BMW 3 Series Touring (2018) has 25 liters (0.88 ft3) bigger cargo space than Buick Regal Sportback (2020).
Buick Regal Sportback (2020) is 257 mm (10.12 inch) longer, 51 mm (2.01 inch) wider, 26 mm (1.02 inch) higher and 12 kg (26 lbs) lighter than BMW 3 Series Touring (2018).