BMW 8 Series (G15) (2020) is 784 mm (30.87 inch) longer, 122 mm (4.80 inch) wider and has 65 liters (2.30 ft3) bigger cargo space than Seat Ibiza (2020).
Seat Ibiza (2020) is 103 mm (4.06 inch) higher and 733 kg (1,616 lbs) lighter than BMW 8 Series (G15) (2020).