Aston Martin DB9 (2016) is 81 mm (3.19 inch) longer and 55 mm (2.17 inch) wider than BMW 4 Series (2014).
BMW 4 Series (2014) is 79 mm (3.11 inch) higher, 200 kg (441 lbs) lighter and has 258 liters (9.11 ft3) bigger cargo space than Aston Martin DB9 (2016).
