BMW 3 Series Gran Turismo (2018) is 524 mm (20.63 inch) longer, 48 mm (1.89 inch) wider, 38 mm (1.50 inch) higher and has 142 liters (5.01 ft3) bigger cargo space than Hyundai i30 (2015).
Hyundai i30 (2015) is 465 kg (1,025 lbs) lighter than BMW 3 Series Gran Turismo (2018).