Acura TLX (2018) is 14 mm (0.55 inch) longer than Kia Optima (2015).
Kia Optima (2015) is 6 mm (0.24 inch) wider, 17 mm (0.67 inch) higher, 79 kg (174 lbs) lighter and has 136 liters (4.80 ft3) bigger cargo space than Acura TLX (2018).
Size difference at a glance
Acura TLX (2018) is 0.3% longer than Kia Optima (2015).
Acura TLX (2018) is 0.3% narrower than Kia Optima (2015).
Acura TLX (2018) is 1.2% lower than Kia Optima (2015).
Acura TLX (2018) is 5.1% heavier than Kia Optima (2015).
Acura TLX (2018) is 26.7% smaller in cargo space than Kia Optima (2015).
Summary
Kia Optima (2015) is the larger car on 3 of 4 key dimensions.
