McLaren GT (2020) is 281 mm (11.06 inch) wider than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 14 mm (0.55 inch) longer, 321 mm (12.64 inch) higher, 96 kg (212 lbs) lighter and has 120 liters (4.24 ft3) bigger cargo space than McLaren GT (2020).