Alfa Romeo 4C (2015) is 806 kg (1,777 lbs) lighter than BMW 8 Series (G15) (2018).
BMW 8 Series (G15) (2018) is 855 mm (33.66 inch) longer, 35 mm (1.38 inch) wider, 157 mm (6.18 inch) higher and has 310 liters (10.95 ft3) bigger cargo space than Alfa Romeo 4C (2015).