Kia Optima (2015) is 567 mm (22.32 inch) longer, 34 mm (1.34 inch) wider and has 74 liters (2.61 ft3) bigger cargo space than Volkswagen Beetle (2018).
Volkswagen Beetle (2018) is 23 mm (0.91 inch) higher and 164 kg (362 lbs) lighter than Kia Optima (2015).
