BMW 1 Series (2015) is 80 mm (3.15 inch) higher and 444 kg (979 lbs) lighter than BMW 8 Series (G15) (2019).
BMW 8 Series (G15) (2019) is 514 mm (20.24 inch) longer, 137 mm (5.39 inch) wider and has 60 liters (2.12 ft3) bigger cargo space than BMW 1 Series (2015).