BMW 6 Series Gran Coupe (2017) is 99 mm (3.90 inch) longer, 36 mm (1.42 inch) wider and has 38 liters (1.34 ft3) bigger cargo space than Citroen C6 (2014).
Citroen C6 (2014) is 71 mm (2.80 inch) higher and 85 kg (187 lbs) lighter than BMW 6 Series Gran Coupe (2017).
