Alfa Romeo Giulia (2018) is 49 mm (1.93 inch) wider, 262 kg (578 lbs) lighter and has 68 liters (2.40 ft3) bigger cargo space than INFINITI Q50 (2016).
INFINITI Q50 (2016) is 140 mm (5.51 inch) longer and 17 mm (0.67 inch) higher than Alfa Romeo Giulia (2018).