BMW 5 Series Gran Turismo (2020) is 79 mm (3.11 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 (2015).
Mazda 6 (2015) is 303 kg (668 lbs) lighter than BMW 5 Series Gran Turismo (2020).