Mercedes GLC-Class (2020) is 76 mm (2.99 inch) wider and 124 mm (4.88 inch) higher than Opel Astra Sports Tourer (2017).
Opel Astra Sports Tourer (2017) is 42 mm (1.65 inch) longer, 625 kg (1,378 lbs) lighter and has 190 liters (6.71 ft3) bigger cargo space than Mercedes GLC-Class (2020).