BMW 8 Series (G15) (2019) is 141 mm (5.55 inch) longer and 92 mm (3.62 inch) wider than Mercedes C-Class (Estate) (2017).
Mercedes C-Class (Estate) (2017) is 116 mm (4.57 inch) higher, 229 kg (505 lbs) lighter and has 70 liters (2.47 ft3) bigger cargo space than BMW 8 Series (G15) (2019).