BMW 5 Series Gran Turismo (2016) is 94 mm (3.70 inch) longer, 42 mm (1.65 inch) wider, 96 mm (3.78 inch) higher and has 79 liters (2.79 ft3) bigger cargo space than Citroen C6 (2017).
Citroen C6 (2017) is 99 kg (218 lbs) lighter than BMW 5 Series Gran Turismo (2016).