Hyundai i40 (2015) is 77 mm (3.03 inch) longer and 1 mm (0.04 inch) wider than Opel Astra Sports Tourer (2014).
Opel Astra Sports Tourer (2014) is 65 mm (2.56 inch) higher, 217 kg (478 lbs) lighter and has 35 liters (1.24 ft3) bigger cargo space than Hyundai i40 (2015).