BMW 8 Series (G14) (2020) is 48 mm (1.89 inch) wider than Mercedes E-Class (2014).
Mercedes E-Class (2014) is 45 mm (1.77 inch) longer, 104 mm (4.09 inch) higher, 53 kg (117 lbs) lighter and has 190 liters (6.71 ft3) bigger cargo space than BMW 8 Series (G14) (2020).