Audi A4 (2015) is 68 mm (2.68 inch) longer, 28 mm (1.10 inch) wider, 10 kg (22 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Vauxhall Astra (Sedan) (2017).
Vauxhall Astra (Sedan) (2017) is 73 mm (2.87 inch) higher than Audi A4 (2015).
