BMW 5 Series Gran Turismo (2019) is 1245 mm (49.02 inch) longer, 147 mm (5.79 inch) wider and has 143 liters (5.05 ft3) bigger cargo space than Opel Adam (2017).
Opel Adam (2017) is 6 mm (0.24 inch) higher and 673 kg (1,484 lbs) lighter than BMW 5 Series Gran Turismo (2019).