Buick Regal Sportback (2018) is 425 mm (16.73 inch) longer and 13 mm (0.51 inch) wider than Hyundai Tucson (2017).
Hyundai Tucson (2017) is 187 mm (7.36 inch) higher, 155 kg (342 lbs) lighter and has 408 liters (14.41 ft3) bigger cargo space than Buick Regal Sportback (2018).
