BMW 6 Series Gran Turismo (2018) is 1356 mm (53.39 inch) longer, 218 mm (8.58 inch) wider, 150 mm (5.91 inch) higher and has 368 liters (13.00 ft3) bigger cargo space than MINI Roadster (2014).
MINI Roadster (2014) is 550 kg (1,213 lbs) lighter than BMW 6 Series Gran Turismo (2018).