Buick Regal (2016) is 792 mm (31.18 inch) longer, 122 mm (4.80 inch) wider and has 18 liters (0.64 ft3) bigger cargo space than Chevrolet Sonic (Hatchback) (2017).
Chevrolet Sonic (Hatchback) (2017) is 23 mm (0.91 inch) higher and 445 kg (981 lbs) lighter than Buick Regal (2016).
