BMW 4 Series Gran Coupe (2018) is 500 mm (19.69 inch) longer, 46 mm (1.81 inch) wider and has 81 liters (2.86 ft3) bigger cargo space than Seat Arona (2017).
Seat Arona (2017) is 163 mm (6.42 inch) higher and 725 kg (1,598 lbs) lighter than BMW 4 Series Gran Coupe (2018).
