BMW 5 Series Gran Turismo (2015) is 1259 mm (49.57 inch) longer, 66 mm (2.60 inch) higher and has 113 liters (3.99 ft3) bigger cargo space than Opel Adam (2014).
Opel Adam (2014) is 96 mm (3.78 inch) wider and 1044 kg (2,302 lbs) lighter than BMW 5 Series Gran Turismo (2015).