BMW 5 Series (2015) is 492 mm (19.37 inch) longer, 119 mm (4.69 inch) wider and has 175 liters (6.18 ft3) bigger cargo space than Subaru Impreza GP (2016).
Subaru Impreza GP (2016) is 7 mm (0.28 inch) higher and 445 kg (981 lbs) lighter than BMW 5 Series (2015).