Mazda 6 (2018) is 239 mm (9.41 inch) longer, 543 kg (1,197 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 51 mm (2.01 inch) wider and 209 mm (8.23 inch) higher than Mazda 6 (2018).