BMW 8 Series (G15) (2020) is 157 mm (6.18 inch) longer and 92 mm (3.62 inch) wider than Mercedes C-Class (Estate) (2014).
Mercedes C-Class (Estate) (2014) is 101 mm (3.98 inch) higher, 329 kg (725 lbs) lighter and has 70 liters (2.47 ft3) bigger cargo space than BMW 8 Series (G15) (2020).