McLaren 675LT Coupe (2016) is 317 mm (12.48 inch) wider and 127 kg (280 lbs) lighter than Mercedes CLA-Class (2018).
Mercedes CLA-Class (2018) is 84 mm (3.31 inch) longer, 250 mm (9.84 inch) higher and has 275 liters (9.71 ft3) bigger cargo space than McLaren 675LT Coupe (2016).