Hyundai Elantra (2020) is 16 mm (0.63 inch) wider and 100 kg (220 lbs) lighter than Mercedes C-Class (2017).
Mercedes C-Class (2017) is 12 mm (0.47 inch) longer, 27 mm (1.06 inch) higher and has 78 liters (2.75 ft3) bigger cargo space than Hyundai Elantra (2020).