BMW 8 Series (G14) (2018) is 809 mm (31.85 inch) longer, 208 mm (8.19 inch) wider and has 67 liters (2.37 ft3) bigger cargo space than Seat Ibiza SC (2014).
Seat Ibiza SC (2014) is 88 mm (3.46 inch) higher and 874 kg (1,927 lbs) lighter than BMW 8 Series (G14) (2018).