BMW 8 Series (G15) (2018) is 424 mm (16.69 inch) longer, 88 mm (3.46 inch) wider and has 50 liters (1.77 ft3) bigger cargo space than Vauxhall Astra (Hatchback) (2014).
Vauxhall Astra (Hatchback) (2014) is 169 mm (6.65 inch) higher and 606 kg (1,336 lbs) lighter than BMW 8 Series (G15) (2018).