Nissan GT-R (2019) is 32 mm (1.26 inch) wider than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 207 mm (8.15 inch) longer, 85 mm (3.35 inch) higher, 360 kg (794 lbs) lighter and has 175 liters (6.18 ft3) bigger cargo space than Nissan GT-R (2019).