Citroen C5 (2014) is 81 mm (3.19 inch) longer and 38 mm (1.50 inch) wider than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 80 mm (3.15 inch) higher, 195 kg (430 lbs) lighter and has 101 liters (3.57 ft3) bigger cargo space than Citroen C5 (2014).