BMW 8 Series (G14) (2019) is 568 mm (22.36 inch) longer and 134 mm (5.28 inch) wider than Mazda 6 Atenza (2018).
Mazda 6 Atenza (2018) is 203 mm (7.99 inch) higher, 630 kg (1,389 lbs) lighter and has 171 liters (6.04 ft3) bigger cargo space than BMW 8 Series (G14) (2019).
