BMW 5 Series Gran Turismo (2020) is 668 mm (26.30 inch) longer, 99 mm (3.90 inch) wider and has 23 liters (0.81 ft3) bigger cargo space than Mazda 6 Atenza (2014).
Mazda 6 Atenza (2014) is 64 mm (2.52 inch) higher and 471 kg (1,038 lbs) lighter than BMW 5 Series Gran Turismo (2020).