Chevrolet Sonic (Sedan) (2014) is 125 mm (4.92 inch) longer, 83 mm (3.27 inch) higher, 137 kg (302 lbs) lighter and has 81 liters (2.86 ft3) bigger cargo space than Mercedes A-Class (2015).
Mercedes A-Class (2015) is 45 mm (1.77 inch) wider than Chevrolet Sonic (Sedan) (2014).