Mercedes GLB-Class (2020) is 260 mm (10.24 inch) longer, 367 mm (14.45 inch) higher and has 385 liters (13.60 ft3) bigger cargo space than Toyota GR Supra (2018).
Toyota GR Supra (2018) is 26 mm (1.02 inch) wider and 889 kg (1,960 lbs) lighter than Mercedes GLB-Class (2020).