Kia Optima (2018) is 10 mm (0.39 inch) wider and 400 kg (882 lbs) lighter than Renault Alaskan (2017).
Renault Alaskan (2017) is 544 mm (21.42 inch) longer, 340 mm (13.39 inch) higher and has 552 liters (19.49 ft3) bigger cargo space than Kia Optima (2018).