Mercedes GLA-Class (2017) is 415 mm (16.34 inch) longer, 139 mm (5.47 inch) wider, 16 mm (0.63 inch) higher and has 7 liters (0.25 ft3) bigger cargo space than Subaru Trezia (2015).
Subaru Trezia (2015) is 518 kg (1,142 lbs) lighter than Mercedes GLA-Class (2017).