INFINITI Q50 (2018) is 191 mm (7.52 inch) longer, 54 mm (2.13 inch) wider, 23 mm (0.91 inch) higher and has 51 liters (1.80 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2014).
Mercedes C-Class (Coupe) (2014) is 141 kg (311 lbs) lighter than INFINITI Q50 (2018).