Peugeot 408 (2017) is 372 mm (14.65 inch) longer, 196 mm (7.72 inch) higher, 209 kg (461 lbs) lighter and has 270 liters (9.53 ft3) bigger cargo space than Toyota GR Supra (2019).
Toyota GR Supra (2019) is 40 mm (1.57 inch) wider than Peugeot 408 (2017).