Hyundai i40 (2020) is 165 mm (6.50 inch) longer, 19 mm (0.75 inch) wider, 15 mm (0.59 inch) higher and has 106 liters (3.74 ft3) bigger cargo space than Mazda 3 (Sedan) (2015).
Mazda 3 (Sedan) (2015) is 77 kg (170 lbs) lighter than Hyundai i40 (2020).