Alfa Romeo 4C (2015) is 41 mm (1.61 inch) wider and 694 kg (1,530 lbs) lighter than BMW 4 Series Gran Coupe (2018).
BMW 4 Series Gran Coupe (2018) is 650 mm (25.59 inch) longer, 205 mm (8.07 inch) higher and has 371 liters (13.10 ft3) bigger cargo space than Alfa Romeo 4C (2015).
