Mazda 6 (2017) is 239 mm (9.41 inch) longer, 591 kg (1,303 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than Mercedes GLC-Class (2014).
Mercedes GLC-Class (2014) is 51 mm (2.01 inch) wider and 209 mm (8.23 inch) higher than Mazda 6 (2017).