Chevrolet Tahoe (2018) is 337 mm (13.27 inch) longer, 392 mm (15.43 inch) higher and has 924 liters (32.63 ft3) bigger cargo space than Opel Insignia (2015).
Opel Insignia (2015) is 39 mm (1.54 inch) wider and 883 kg (1,947 lbs) lighter than Chevrolet Tahoe (2018).