BMW 3 Series Gran Turismo (2021) is 170 mm (6.69 inch) longer, 520 kg (1,146 lbs) lighter and has 171 liters (6.04 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 61 mm (2.40 inch) wider and 150 mm (5.91 inch) higher than BMW 3 Series Gran Turismo (2021).