BMW 8 Series (G15) (2019) is 590 mm (23.23 inch) longer and 98 mm (3.86 inch) wider than Peugeot 308 (2018).
Peugeot 308 (2018) is 116 mm (4.57 inch) higher, 504 kg (1,111 lbs) lighter and has 50 liters (1.77 ft3) bigger cargo space than BMW 8 Series (G15) (2019).