Acura TLX (2017) is 14 mm (0.55 inch) longer than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 6 mm (0.24 inch) wider, 22 mm (0.87 inch) higher, 40 kg (88 lbs) lighter and has 179 liters (6.32 ft3) bigger cargo space than Acura TLX (2017).