Mazda 3 (Sedan) (2020) is 156 mm (6.14 inch) longer and 1117 kg (2,463 lbs) lighter than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 28 mm (1.10 inch) wider, 483 mm (19.02 inch) higher and has 17 liters (0.60 ft3) bigger cargo space than Mazda 3 (Sedan) (2020).