Chevrolet Tahoe (2021) is 455 mm (17.91 inch) longer, 194 mm (7.64 inch) wider, 473 mm (18.62 inch) higher and has 1566 liters (55.30 ft3) bigger cargo space than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 1203 kg (2,652 lbs) lighter than Chevrolet Tahoe (2021).