Opel Insignia (2014) is 464 mm (18.27 inch) longer, 224 mm (8.82 inch) wider, 206 mm (8.11 inch) higher and has 355 liters (12.54 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 29 kg (64 lbs) lighter than Opel Insignia (2014).