Mercedes B-Class (2017) is 15 mm (0.59 inch) longer, 265 mm (10.43 inch) higher, 234 kg (516 lbs) lighter and has 301 liters (10.63 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 74 mm (2.91 inch) wider than Mercedes B-Class (2017).