Bentley Continental GT (2015) is 84 mm (3.31 inch) wider than Kia Optima (2017).
Kia Optima (2017) is 49 mm (1.93 inch) longer, 76 mm (2.99 inch) higher, 710 kg (1,565 lbs) lighter and has 152 liters (5.37 ft3) bigger cargo space than Bentley Continental GT (2015).