Kia Optima (2016) is 485 mm (19.09 inch) longer than Vauxhall Astra (Estate) (2014).
Vauxhall Astra (Estate) (2014) is 182 mm (7.17 inch) wider, 20 mm (0.79 inch) higher, 197 kg (434 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than Kia Optima (2016).
