Mazda 6 (2016) is 208 mm (8.19 inch) longer, 630 kg (1,389 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 (2016).