McLaren GT (2020) is 26 mm (1.02 inch) longer and 281 mm (11.06 inch) wider than Vauxhall Astra (Sedan) (2017).
Vauxhall Astra (Sedan) (2017) is 286 mm (11.26 inch) higher, 166 kg (366 lbs) lighter and has 40 liters (1.41 ft3) bigger cargo space than McLaren GT (2020).