Kia Optima (2016) 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 209 kg (461 lbs) lighter than Kia Optima (2016).
