BMW 3 Series Touring (2018) is 909 mm (35.79 inch) longer, 127 mm (5.00 inch) wider, 40 mm (1.57 inch) higher and has 254 liters (8.97 ft3) bigger cargo space than MINI Roadster (2015).
MINI Roadster (2015) is 509 kg (1,122 lbs) lighter than BMW 3 Series Touring (2018).