BMW 5 Series Touring (2020) is 163 mm (6.42 inch) longer, 51 mm (2.01 inch) higher, 23 kg (51 lbs) lighter and has 150 liters (5.30 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
BMW 8 Series (G15) (2018) is 7 mm (0.28 inch) wider than BMW 5 Series Touring (2020).