Kia Optima (2015) is 25 mm (0.98 inch) longer, 65 mm (2.56 inch) higher, 192 kg (423 lbs) lighter and has 104 liters (3.67 ft3) bigger cargo space than Kia Stinger (2016).
Kia Stinger (2016) is 10 mm (0.39 inch) wider than Kia Optima (2015).
Size difference at a glance
Kia Optima (2015) is 0.5% longer than Kia Stinger (2016).
Kia Optima (2015) is 0.5% narrower than Kia Stinger (2016).
Kia Optima (2015) is 4.6% taller than Kia Stinger (2016).
Kia Optima (2015) is 11.1% lighter than Kia Stinger (2016).
Kia Optima (2015) is 25.6% larger in cargo space than Kia Stinger (2016).
Summary
Kia Optima (2015) is the larger car on 3 of 4 key dimensions.
