Peugeot 408 (2020) is 92 mm (3.62 inch) longer and 6 mm (0.24 inch) wider than Vauxhall Astra (Sedan) (2014).
Vauxhall Astra (Sedan) (2014) is 12 mm (0.47 inch) higher, 15 kg (33 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than Peugeot 408 (2020).