BMW 5 Series Gran Turismo (2018) 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 16 mm (0.63 inch) higher and 613 kg (1,351 lbs) lighter than BMW 5 Series Gran Turismo (2018).