Buick Regal Sportback (2019) is 45 mm (1.77 inch) longer and 2 mm (0.08 inch) wider than Kia Optima (2016).
Kia Optima (2016) is 10 mm (0.39 inch) higher, 110 kg (243 lbs) lighter and has 40 liters (1.41 ft3) bigger cargo space than Buick Regal Sportback (2019).
Size difference at a glance
Buick Regal Sportback (2019) is 0.9% longer than Kia Optima (2016).
Buick Regal Sportback (2019) is 0.1% wider than Kia Optima (2016).
Buick Regal Sportback (2019) is 0.7% lower than Kia Optima (2016).
Buick Regal Sportback (2019) is 6.9% heavier than Kia Optima (2016).
Buick Regal Sportback (2019) is 7.8% smaller in cargo space than Kia Optima (2016).
Overall footprint
Buick Regal Sportback (2019) has a 1% larger overall footprint than Kia Optima (2016) (length × width).
