Alfa Romeo Giulia (2018) is 5 mm (0.20 inch) longer, 47 mm (1.85 inch) wider, 47 mm (1.85 inch) higher and 328 kg (723 lbs) lighter than BMW 4 Series Gran Coupe (2017).
BMW 4 Series Gran Coupe (2017) has 31 liters (1.09 ft3) bigger cargo space than Alfa Romeo Giulia (2018).