Nissan Sentra (2015) is 229 mm (9.02 inch) higher than Opel Insignia Grand Sport (2020).
Opel Insignia Grand Sport (2020) is 267 mm (10.51 inch) longer, 24 mm (0.94 inch) wider, 237 kg (522 lbs) lighter and has 62 liters (2.19 ft3) bigger cargo space than Nissan Sentra (2015).