BMW 8 Series (G14) (2018) is 103 mm (4.06 inch) longer and 87 mm (3.43 inch) wider than Hyundai i40 Tourer (2015).
Hyundai i40 Tourer (2015) is 131 mm (5.16 inch) higher, 528 kg (1,164 lbs) lighter and has 203 liters (7.17 ft3) bigger cargo space than BMW 8 Series (G14) (2018).