Acura RDX (2015) is 985 mm (38.78 inch) longer, 274 mm (10.79 inch) wider, 129 mm (5.08 inch) higher and has 416 liters (14.69 ft3) bigger cargo space than Chevrolet Spark (2018).
Chevrolet Spark (2018) is 657 kg (1,448 lbs) lighter than Acura RDX (2015).