BMW 5 Series Gran Turismo (2020) is 48 mm (1.89 inch) longer, 28 mm (1.10 inch) wider, 28 mm (1.10 inch) higher and has 50 liters (1.77 ft3) bigger cargo space than Mazda 6 (2018).
Mazda 6 (2018) is 188 kg (414 lbs) lighter than BMW 5 Series Gran Turismo (2020).