McLaren GT (2020) is 239 mm (9.41 inch) wider and 29 kg (64 lbs) lighter than Opel Insignia Country Tourer (2017).
Opel Insignia Country Tourer (2017) is 229 mm (9.02 inch) longer, 299 mm (11.77 inch) higher and has 120 liters (4.24 ft3) bigger cargo space than McLaren GT (2020).