Buick Regal (2016) is 66 mm (2.60 inch) higher and 545 kg (1,202 lbs) lighter than Mercedes CL-Class (2018).
Mercedes CL-Class (2018) is 264 mm (10.39 inch) longer, 15 mm (0.59 inch) wider and has 88 liters (3.11 ft3) bigger cargo space than Buick Regal (2016).