BMW 3 Series Gran Turismo (2014) is 163 mm (6.42 inch) longer, 32 mm (1.26 inch) wider, 63 mm (2.48 inch) higher and has 101 liters (3.57 ft3) bigger cargo space than Mazda 3 (Sedan) (2017).
Mazda 3 (Sedan) (2017) is 342 kg (754 lbs) lighter than BMW 3 Series Gran Turismo (2014).