Aston Martin DB9 (2016) is 148 kg (326 lbs) lighter than BMW 8 Series (G14) (2020).
BMW 8 Series (G14) (2020) is 115 mm (4.53 inch) longer, 22 mm (0.87 inch) wider, 56 mm (2.20 inch) higher and has 163 liters (5.76 ft3) bigger cargo space than Aston Martin DB9 (2016).