Cadillac CT6 (2018) is 767 mm (30.20 inch) longer, 145 mm (5.71 inch) wider and has 11 liters (0.39 ft3) bigger cargo space than Chevrolet Sonic (Sedan) (2017).
Chevrolet Sonic (Sedan) (2017) is 43 mm (1.69 inch) higher and 367 kg (809 lbs) lighter than Cadillac CT6 (2018).
