Alfa Romeo 4C (2018) is 972 kg (2,143 lbs) lighter than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 668 mm (26.30 inch) longer, 23 mm (0.91 inch) wider, 473 mm (18.62 inch) higher and has 240 liters (8.48 ft3) bigger cargo space than Alfa Romeo 4C (2018).