BMW 4 Series Gran Coupe (2018) is 603 mm (23.74 inch) longer, 92 mm (3.62 inch) wider and has 155 liters (5.47 ft3) bigger cargo space than Hyundai i20 (2015).
Hyundai i20 (2015) is 85 mm (3.35 inch) higher and 752 kg (1,658 lbs) lighter than BMW 4 Series Gran Coupe (2018).