Aston Martin DB9 (2016) is 21 mm (0.83 inch) longer and 10 mm (0.39 inch) wider than BMW 4 Series (2016).
BMW 4 Series (2016) is 100 mm (3.94 inch) higher, 200 kg (441 lbs) lighter and has 258 liters (9.11 ft3) bigger cargo space than Aston Martin DB9 (2016).
