Aston Martin DB9 (2016) is 221 mm (8.70 inch) longer and 93 mm (3.66 inch) wider than Opel Ampera (2020).
Opel Ampera (2020) is 156 mm (6.14 inch) higher, 128 kg (282 lbs) lighter and has 113 liters (3.99 ft3) bigger cargo space than Aston Martin DB9 (2016).