Cadillac CTS-V (2019) is 727 mm (28.62 inch) longer, 54 mm (2.13 inch) wider, 20 mm (0.79 inch) higher and has 47 liters (1.66 ft3) bigger cargo space than Mercedes A-Class (2017).
Mercedes A-Class (2017) is 485 kg (1,069 lbs) lighter than Cadillac CTS-V (2019).