BMW 3 Series Touring (2015) is 22 mm (0.87 inch) higher, 349 kg (769 lbs) lighter and has 55 liters (1.94 ft3) bigger cargo space than BMW 8 Series (G16) (2019).
BMW 8 Series (G16) (2019) is 449 mm (17.68 inch) longer and 121 mm (4.76 inch) wider than BMW 3 Series Touring (2015).