BMW 8 Series (G15) (2019) is 503 mm (19.80 inch) longer, 107 mm (4.21 inch) wider and has 40 liters (1.41 ft3) bigger cargo space than Hyundai i30 (2020).
Hyundai i30 (2020) is 114 mm (4.49 inch) higher and 548 kg (1,208 lbs) lighter than BMW 8 Series (G15) (2019).