Mercedes C-Class (2015) is 271 mm (10.67 inch) longer, 70 mm (2.76 inch) wider and has 95 liters (3.35 ft3) bigger cargo space than Subaru Impreza GP (2016).
Subaru Impreza GP (2016) is 28 mm (1.10 inch) higher and 50 kg (110 lbs) lighter than Mercedes C-Class (2015).