Alfa Romeo Giulia (2019) is 31 mm (1.22 inch) wider, 44 mm (1.73 inch) higher, 66 kg (146 lbs) lighter and has 156 liters (5.51 ft3) bigger cargo space than Cadillac ATS Coupe (2017).
Cadillac ATS Coupe (2017) is 20 mm (0.79 inch) longer than Alfa Romeo Giulia (2019).