Buick Regal (2016) is 414 mm (16.30 inch) longer and 122 mm (4.80 inch) wider than Chevrolet Sonic (Sedan) (2018).
Chevrolet Sonic (Sedan) (2018) is 33 mm (1.30 inch) higher, 379 kg (836 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Buick Regal (2016).
