Mazda 6 (2020) is 239 mm (9.41 inch) longer, 541 kg (1,193 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 51 mm (2.01 inch) wider and 209 mm (8.23 inch) higher than Mazda 6 (2020).