BMW 5 Series Touring (2017) is 86 mm (3.39 inch) longer, 41 mm (1.61 inch) wider, 94 mm (3.70 inch) higher and has 139 liters (4.91 ft3) bigger cargo space than Citroen C6 (2017).
Citroen C6 (2017) is 199 kg (439 lbs) lighter than BMW 5 Series Touring (2017).