Acura RDX (2016) is 267 mm (10.51 inch) longer, 137 mm (5.39 inch) wider, 135 mm (5.31 inch) higher and has 317 liters (11.19 ft3) bigger cargo space than Chevrolet Sonic (Sedan) (2018).
Chevrolet Sonic (Sedan) (2018) is 399 kg (880 lbs) lighter than Acura RDX (2016).