BMW 8 Series (G14) (2020) is 581 mm (22.87 inch) longer and 98 mm (3.86 inch) wider than Peugeot 308 (2015).
Peugeot 308 (2015) is 118 mm (4.65 inch) higher, 613 kg (1,351 lbs) lighter and has 120 liters (4.24 ft3) bigger cargo space than BMW 8 Series (G14) (2020).